Digital images of petrology rock thin sections from samples that are referenced in the BGS Petrological Collection Database (Britrocks). Two reference images are being captured for each thin section, one taken in Plane Polarized Light (PPL) and the other in Crossed Polarized Light (XPL). The Britrocks database provides an index to the BGS mineralogical & petrological collection. The computer database covers samples in the UK onshore mapping collection together with worldwide reference minerals and the Museum Reserve collection. The first England and Wales collection sample is from circa 1877, Threshthwaite Comb, Cumbria (collected by the Reverend Clifton Ward). The addition of new samples, transfer of records from registers and updates of existing records is ongoing on a regular basis. Internet access to the database is provided on the BGS web site. Capture of the Scottish Collections began February 2012. Capture of the English and foreign collections began in December 2012.

This dataset is about books. It has 1 row and is filtered where the book is Rocks & minerals : crystals, erosion, geology, fossils : with 19 easy-to-do experiments and 400 exciting pictures. It features 7 columns including author, publication date, language, and book publisher.

This dataset includes thin section images, automated mineralogy mineral maps, whole-rock geochemical data, and whole-rock Nd-Sr-Pb isotopic analysis of samples collected from nine mafic-ultramafic outcrops in the Wet Mountains, southern Colorado, during the summer of 2022. These data will accompany an upcoming journal publication and are intended to supplement recently collected airborne magnetic and ground gravity data that indicate a mostly buried mafic-ultramafic intrusion of unknown age (Grauch et al., 2023; Magnin and Anderson, 2023; Magnin et al., 2023). Outcrop locations were identified based on previous mapping by Taylor (1974). A single thin section was made from each sample, and both plain- and cross-polarized light (PPL and XPL, respectively) images were taken of the entire section using a flatbed film scanner. Automated mineralogy (AM) scans were collected from half of each thin section using a TESCAN Integrated Mineral Analyzer (TIMA) at the Colorado School of Mines Mineral and Materials characterization facility. Whole-rock major and trace element geochemistry of samples used for thin sections and of separate compositional layers in thin section JWM-129 (i.e., JWM-129.1, -129.2) were analyzed by Activation Laboratories Ltd., Ancaster, Ontario. Platinum group element chemistry was collected and analyzed by AGAT Laboratories, Calgary, Alberta. Five whole-rock samples and two mineral separates were analyzed using Sm-Nd thermal ionization mass spectrometry (TIMS) at the University of Colorado Boulder TIMS Facility and Clean Room. The same five whole-rock samples were also analyzed for Rb-Sr and Pb-Pb isotopes using TIMS at the same lab. All analyses were performed between October 2022 and February 2024. The images contained in the zip file are categorized by sample name and additionally labeled with PPL, XPL, and AM categories. Automated mineralogy image names end with a letter indicating whether the top (T), bottom (B), left (L), or right (R) half of the thin section was scanned. A csv file of the modal mineral percentages from automated mineralogy is also included in the zip file. Sample locations/descriptions, whole rock geochemistry, Nd-Sr-Pb isotopes, and a data dictionary are included in csv files.

This data release contains analytical data and images for a suite of drill core samples from the Mineral Hill alkaline complex (MHAC), northeastern Wyoming. Geochemistry data include major and trace element analytical results for 103 alkaline igneous rock samples. Images include hand sample photographs of halved core and full thin section images captured in transmitted, plane-polarized and cross-polarized light. Samples are from two core holes drilled by Humble Oil Company in 1970, and subsequently acquired and stored by Felix Mutschler at Eastern Washington University. The two skeletonized (incomplete) drill cores were acquired by the U.S. Geological Survey Geology, Minerals, Energy, and Geophysics Spokane office in 2019, through a co-operative agreement with Eastern Washington University. The collection contains full-core pieces from select intervals representative of the different lithologies and textures in the complex. Mineral Hill is a Paleogene-age, ring-shaped, multi-phase ...

A regional chemical boundary termed the 'salt line', in the Vestfold Hills of East Antarctica, was investigated using X-ray diffraction and electron probe analyses of surficial salts, and conductivity of surficial sediments. West of the salt line, halite and thenardite are abundant. These salts are derived from dispersal of marine aerosols, saturation of sediment by seawater during postglacial marine transgression, and glacial dispersal of salt-saturated fjord bottom sediments. East of the salt line, subglacial calcium carbonates and salts formed by chemical weathering of their substrates may be found. The weathering products are formed from chemically and morphologically diverse minerals, which include two minerals not found previously in Antarctica, dypingite and hydromagnesite, and the first confirmed occurrence of brushite. The field descriptions, analytical data and photographs used to make these determinations are contained on the AADC server and are available through the WWW.

An Electron Probe Microanalyser (EPMA) was used to perform the analysis of samples.

It should be noted that, these EPMA analyses are qualitative, and return 'counts' and as such they are dimensionless.

The column headings in this dataset are: sample field number location easting northing altitude substrate geology field occurrence minerals/compounds reliability of identification analytical technique composition images Sodium (Na) Magnesium (Mg) Aluminum (Al) Silicon (si) Sulfur (S) Chlorine (Cl) Potassium (K) Calcium (Ca) Titanium (Ti) Manganese (Mn) Iron (Fe) Copper (Cu) image description

This report describes the results of some two years of effort devoted to archiving the Marine Manganese Nodule Collection in the Geology Department at Washington State University, Pullman, Washington. As proposed to the National Oceanic and Atmospheric Administration in 1984, the Collection was organized, labelled, and indexed so that efficient use by outside investigators would be possible. Since the late 1990s, the collection has been transferred to the Smithsonian National Museum of Natural History, Washington, D. C., U.S.A where it is available for study.

Multispectral remote sensing data acquired by Landsat 8 Operational Land Imager (OLI) sensor were analyzed using an automated technique to generate surficial mineralogy and vegetation maps of the conterminous western United States. Six spectral indices (e.g. band-ratios), highlighting distinct spectral absorptions, were developed to aid in the identification of mineral groups in exposed rocks, soils, mine waste rock, and mill tailings across the landscape. The data are centered on the Western U.S. and cover portions of Texas, Oklahoma, Kansas, the Canada-U.S. border, and the Mexico-U.S. border during the summers of 2013 – 2014. Methods used to process the images and algorithms used to infer mineralogical composition of surficial materials are detailed in Rockwell and others (2021) and were similar to those developed by Rockwell (2012; 2013). Final maps are provided as ERDAS IMAGINE (.img) thematic raster images and contain pixel values representing mineral and vegetation group classifications. Rockwell, B.W., 2012, Description and validation of an automated methodology for mapping mineralogy, vegetation, and hydrothermal alteration type from ASTER satellite imagery with examples from the San Juan Mountains, Colorado: U.S. Geological Survey Scientific Investigations Map 3190, 35 p. pamphlet, 5 map sheets, scale 1:100,000, http://doi.org/10.13140/RG.2.1.2769.9365. Rockwell, B.W., 2013, Automated mapping of mineral groups and green vegetation from Landsat Thematic Mapper imagery with an example from the San Juan Mountains, Colorado: U.S. Geological Survey Scientific Investigations Map 3252, 25 p. pamphlet, 1 map sheet, scale 1:325,000, http://doi.org/10.13140/RG.2.1.2507.7925. Rockwell, B.W., Gnesda, W.R., and Hofstra, A.H., 2021, Improved automated identification and mapping of iron sulfate minerals, other mineral groups, and vegetation from Landsat 8 Operational Land Imager Data: San Juan Mountains, Colorado, and Four Corners Region: U.S. Geological Survey Scientific Investigations Map 3466, scale 1:325,000, 51 p. pamphlet, https://doi.org/10.3133/sim3466/.

During the cruise of the" Mabahiss" from Zanzibar to Colombo at Station 133 (1° 25' 54" S. to 1° 19' 42" S. and 66° 34' 12" E. to 66° 35' 18" E.) several small rock fragments were brought up in the Monegasque net; and, since at this position there is no possibility of the material being transferred by floating Ice, these specimens are of some interest as samples of oceanic rock foundations. All the rocks have a black appearance, but in the majority this skin is of negligible thickness. Exceptionally, however, it may attain to 1/3 in. (St. 133, 8), and then the specimens are rounded. The coating is made of dark opaque manganese material. At Station 166 one or two similar specimens of angular basalt were found in the trawl consisting mainly of manganese nodules.

A total of 192 rock samples were collected from 9 field profiles of Xuzhuang formation in the Ordos Basin. The rock types are complete, including terrigenous clastic rock, carbonate rock and migmatite. This data set shows in detail the mineral composition and content, structure, observation and description of biological fossils and diagenesis of thin sections of Xuzhuang formation, and provides systematic polarized micrographs. It can not only provide data support for global middle Cambrian basic geological research, but also provide basic geological data reference for oil and gas exploration of Middle Cambrian strata in Ordos Basin.

No description is available. Visit https://dataone.org/datasets/d1280991093598eb8b718dcdac83619d for complete metadata about this dataset.

This database includes spatial scope: ① Xinjiang, China; ② Central Asia (Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan). The data content mainly includes: ① Structural map dataset of Xinjiang and neighboring Central Asia (rock construction combination, structural zoning, mineralization zone, prospective area, target area, mineral resources); The main map includes the mineralization map of Xinjiang and neighboring Central Asia (1:2.5 million). The spatial database adopts the ArcGIS platform, which can provide basic data support for regional mineralization law research, resource potential assessment, strategic prospect area delineation, and various thematic map compilation. The database format is a file database (. GDB), which includes engineering files (MXD) and raster images (JPG). Various common graphic formats (PDF, TIF, EPS, etc.) can also be generated as needed. The structural map data of Xinjiang and its neighboring areas in Central Asia are projected using Lambert's equal conical projection, with a central longitude of 75 degrees east and dual latitudes of 30 degrees and 50 degrees respectively. Data sources and processing methods; The basic geological data mainly comes from the Asian Geological Map (2015) compiled by Academician Ren Jishun (1:5 million), the Central Eurasian Tectonic Metallogenic Map and Geological Map (2008) (1:2.5 million), and the Geological Survey Department Geological Map of various countries in the region (1:10 million); The main sources of mineral data include the results of the National Mineral Resource Potential Assessment Project (2012), the Central Asian Mineral Database and Thematic Map of the Natural History Museum in London, UK (2014), the Afghanistan dataset of the United States Geological Survey (2008), relevant data from geological survey departments of various countries in the region, and papers and papers related to mineral resources in the region. In addition, to meet the needs of various data modifications and improvements, a large amount of remote sensing data is used, including ETM+, OLI, ASTER, Worldview and other image data, as well as 90m, 30m, 12.5m DEM data, etc. Data quality description; In order to meet the needs of studying the ore-forming laws, geological mineral maps, and ore-forming prediction maps in the pan third polar region, editing, processing, and supplementing are carried out in terms of data spatial accuracy, logical consistency, and data integrity. Specifically, it includes: ① vectorization, based on the aforementioned data, a large amount of vectorization work has been carried out to supplement the missing areas of digital data (Iran, Pakistan), while merging and segmenting various surface and line features according to the degree of data update. The vectorization work is completed in accordance with the scale accuracy requirements of relevant Chinese standards; ② Topology processing to eliminate topology errors such as overlapping surfaces and empty areas; ③ Improve the structure of element attributes and supplement the content of element attributes, focusing on the research of regional mineralization laws, the compilation of geological mineral maps and mineralization prediction maps, and in accordance with relevant Chinese regulations, combined with specific information and data content, establish corresponding data models, improve the attribute structure of geological bodies, structures, and mineral elements, and complete the corresponding attribute filling work; Based on the above data processing content, combined with the research results and latest understanding of the pan third pole, further modifications and improvements have been made to the relevant geological content in the area. Data Application Achievements and Prospects: The Xinjiang and Central Asia Neighborhood Structural Map Dataset mainly serves the research of important ore-forming belts, national and regional ore-forming laws, and the preparation of regional ore-forming prediction maps within the Pan Third Pole, with a scale of 1:2.5 million (Xinjiang Central Asia Corridor, China).

Deep sea manganese nodules from the Central Pacific Basin are mainly composed of 10Å manganite and d-MnO2 Two zones equivalent to the minerals are evidently distinguishable according to their optical properties. Microscopic and microprobe analyses revealed quite different chemical compositions and textnral characteristics of the two zones. These different feature of the two zones of nodules suggest the different conditions under which they were formed. Concentrations of 11 metal elements in the zones and inter-element relationships show that the 10Å manganite zone is a monomineralic oxide phase containing a large amount of manganese and minor amounts of useful metals, and that the d-MnO2 zone which is apparently homogeneous under the microscope is a mixture of three or more different minerals. The chemical characteristics of the two zones can explain the variation of bulk composition of deep sea manganese nodules and inter-element relationships previously reported, suggesting that the bulk compositions are attributable to the mixing of the 10Å manganite and d-MnO2 zones in various ratios. Characteristic morphology and surface structure of some types of nodules and their relationships to chemistry are also attribut able to the textural and chemical features of the above mentioned two phases. Synthesis of hydrated manganese oxides was carried out in terms of the formation of manganese minerals in the ocean. The primary product which is an equivalent to d-MnO2 was precipitated from Mn 2+ -bearing alkaline solution under oxigenated condition by air bubbling at one atmospheric pressure and room temperature. The primary product was converted to a l0Å manganite equivalent by contact with Ni 2+, Cu 2++ or CO2+ chloride solutions. This reaction caused the decrease of Ni2+, Cu2+ or CO2+ concentrations and the increase of Na+ concentration in the solution. The reaction also proceeded even in diluted solutions of nickel chloride and resulted in a complete removal of Ni2+ from the solution. Reaction products were exclusively 10Å manganite equivalents and their chemical compositions were very similar to those of 10Å manganite in manganese nodules. The maximum value of(Cu+Ni+Co)/Mn ratio of 10Å manganite zones in manganese nodules is 0.16, and the Ni/Mn ratio of synthetic 10Å manganite ranges from 0.15 to 0.18 with the average of 0.167.

This paper is based upon data collected during the summers of 1912 and 1913. Mr. A. O. Hayes and Prof. van Ingen of Princeton University, while making a study of the general geology, stratigraphy, and palaeontology of the shores of Conception Bay, Newfoundland, came upon the manganiferous rocks of the Lower Cambrian exposed at Manuels, Topsail, Brigus, and other places. The following summer, of 1913, the writer as a member of the Princeton Newfoundland Expedition undertook a more detailed study of these deposits. In this paper therefore there has been an attempt to present as comprehensive a study of the manganese of southeastern Newfoundland. It is primarily chemical in its nature and the analyses herewith presented are from samples taken from the principal manganese-bearing beds.

Fine-scale dating is crucial to understanding the growth and environments of formation of marine manganese deposits. The paleomagnetic method of dating of manganese nodules and crusts has been attempted but with no success so far. We measured remanent magnetization (RM) on up to 75-mm-thick hydrogenetic crusts at intervals of 2.5 mm after mineralogical and chemical examination, careful separation, and alternative field demagnetization. Stable sharp RM and well-correlated polarity-change patterns between four samples made it possible to identify the Pliocene-Quaternary magnetic chrons in them. These data show that the three crusts have grown continuously at rates of 14-17 mm/m.y. since the Early Pliocene. This is three or four times faster than those for Central Pacific seamount hydrogenetic crusts. Estimates of growth rate based on determination of Co-flux are within this range. Magnetostratigraphy therefore appears to be a powerful method for dating hydrogenetic manganese crusts when supported by conventional dating methods. These results encourage finer-scale investigations which promise more detailed paleoceanographic reconstruction.

GIS-based 3-D relational framework of geological and structural contacts, and geophysical provinces for a 16,000 km2 region ("3D geological map") of Marie Byrd Land, West Antarctica. The resource consolidates bedrock geology maps,airborne geophysics data, structural data, geochronological data, rock sample sites, satellite images and aerial photographs. The database is to be published as a dynamic GIS by the new Antarctic Geospatial Information Center (AGIC) at the University of Minnesota (collaboration of Siddoway and Morin), http://www.agic.umn.edu .

 Rock sample collections from Fosdick Mountains, Marie Byrd Land; predominantly migmatite gneisses and plutonic rocks, with geochronology/thermochronology and geochemical data for selected samples
 Sample numbers and descriptions are entered in the System for Earth SAmple Registration (SESAR) registry at http://www.geosamples.org , assigned an IGSN number, and can be located in through the online search routine. Researchers who have need of physical material can contact csiddoway@coloradocollege.edu with explanation and request to acquire more detailed descriptions, isotopic data or sample material for analytical work.

 List of peer-reviewed publications based on the funded research.

 Teaching aids (undergraduate level): Digital photographs illustrating migmatite textures and macroscopic elements of gneiss dome architecture, together with photomicrographs of metamorphic textures. Digital photo resource of glacial features. The photo collection can be made available on CD, upon request.

This static map shows the relative rock ages across Tennessee. The data was downloaded from the USGS Mineral Resources Database.The map is saved in a PNG image format and is 11"x17" in size.

The digital map database, compiled from previously published and unpublished data, and new mapping by the authors, represents the general distribution of bedrock and surficial deposits in the House Rock Spring area. Together with the accompanying text, it provides current information on the geologic structure and stratigraphy of the area covered. The database delineates map units that are identified by general age, lithology, and geomorphology following the spatial resolution (scale) of the database to 1:24,000. The content and character of the database, as well as three methods of obtaining the database, are described below.

This digital map database is compiled from unpublished data and new mapping by the authors, represents the general distribution of surficial and bedrock geology in the mapped area. Together with the accompanying pamphlet, it provides current information on the geologic structure and stratigraphy of the area. The database delineate map units that are identified by age and lithology following the stratigraphic nomenclature of the U.S. Geological Survey. The scale of the source maps limits the spatial resolution of the database to 1:24,000 or smaller.

This report consists of a set of geologic map database files (ARC/ INFO coverages) and supporting text and plot files. In addition, the report includes two sets of plot files(Post Script and PDF format) that will generate map sheets and pamphlets similar to a traditional USGS Miscellaneous Field Studies Report. These files are described in the explanatory pamphlets (hrsgeo.doc, hrsgeo. pdf, or hrsgeo.txt). The base layer used in the preparation of the geologic map plot files was derived from a Digital Raster Graphic version of a standard USGS 7.5' quadrangle. This raster image was converted to Grid format in ARC/INFO, trimmed and converted to a GeoTIFF image. The resultant TIFF image was combined with geologic data to produce the final map image in Illustrator 8.0.

The microstructures observed in the hydrogenetic ferromanganese crusts of neogene age sampled on the West African margin of the Central and Equatorial Atlantic are laminated. Three types of laminae were recognized. Several arguments, in particular TEM observations of ultra-thin sections, indicate that the laminae probably correspond to mineralized microbial films. The study of quaternary to recent ferromanganese coatings sampled in the Atlantic and in the Mediterranean Sea leads to the same conclusion. The mineralization of the biofilm is a step process. The sequestration of Fe and of variable amounts of Si preceeds the Mn scavenging. The type of lamina depends on the general hydrologic conditions of the bottom waters (currents activity, nutriments and Mn availability) but, also, on the microtopography of the sea water-lamina interface, probably because it introduces significant differences about Eh and Mn fluxes. Considering the low accretion rate of this type of deposit, it appears that the biofilm growth may be controled by a self-regulating process: the initial period of active production is followed by a long time interval of low production or of equilibrium between accumulation and removal of slime.

It is the purpose of this chapter to present information available at the time of publication on the internal features of manganese nodules, to offer genetic interpretations of these features, and to suggest new lines of research. To judge from the limited data available on ocean floor crusts rich in manganese and iron (see, for example, Aumento et al., 1968, doi:10.1594/PANGAEA.862565 ), much of what is learnt about nodules may be applied eventually to an understanding of the origin of these more continuous masses. A genetic relationship between these two is likely.

This database includes the spatial scope of the Cuoqin Shenzha metallogenic belt (Gangdise Himalayan orogenic system). The data content mainly includes: the Cuoqin Shenzha Au-Cu-Fe-W-Mo metallogenic belt metallogenic regularity dataset (rock formation combination, structural zoning, metallogenic zone, prospective area, target area, mineral resources); The main maps include the mineralization pattern map of the Cuoqin Shenzha Au-Cu-Fe-W-Mo mineralization belt (1:1 million). The spatial database adopts ArcGIS platform, which can provide basic data support for regional mineralization law research, resource potential assessment, strategic prospect area delineation, and various thematic map compilation. The database format is a file database (. GDB), which includes engineering files (MXD) and raster images (JPG). Various common graphic formats (PDF, TIF, EPS, etc.) can also be generated as needed. The mineralization law data of the Cuoqin Shenzha Au-Cu-Fe-W-Mo mineralization belt were obtained using Lambert isoshape cone projection, with the central meridian at 86 degrees east longitude and the double latitudes at 30 degrees and 33 degrees, respectively. Data sources and processing methods: The basic geological data mainly comes from the Asian Geological Map compiled by Academician Ren Jishun (2015) (1:5 million), the Central Eurasian Structural Mineralogy Map and Geological Map (2008) (1:2.5 million), and geological maps of various geological survey departments in the region (1:1 million); ② The main sources of mineral data include the results of the National Mineral Resource Potential Evaluation Project (2012), relevant information and data from various geological survey departments in the region, and relevant papers and publications on mineral resources in the region. In addition, to meet various data modification and improvement requirements, a large amount of remote sensing data is used, including ETM+, OLI, ASTER, Worldview and other image data, as well as 90m, 30m, 12.5m DEM data, etc. Data quality description: In order to meet the needs of studying the mineralization laws, geological mineral maps, and mineralization prediction maps of the Cuoqin Shenzha Au-Cu-Fe-W-Mo mineralization belt, editing, processing, and supplementing are carried out in terms of data spatial accuracy, logical consistency, and data completeness. Specifically, it includes: ① Vectorization, based on the aforementioned data, a large amount of vectorization work has been carried out to supplement the missing areas of digital data. At the same time, according to the degree of data update, the elements of the segmentation plane and line are merged and segmented. Vectorization is completed in accordance with the accuracy requirements of the scale in relevant Chinese regulations. ② Topology processing to eliminate topological errors such as overlapping surfaces and voids; ③ We have improved the structure of element attributes and supplemented the content of element attributes. Based on the objectives of compiling regional mineralization law maps and mineralization prediction maps, and in accordance with relevant regulations in China, combined with specific information and data content, we have established corresponding data models, improved the attribute structure of geological bodies, and completed the filling of rock construction combinations, structural zoning, and the attributes of the corresponding mineralization zones; Based on the above data processing content, combined with research results and the latest understanding of the Qinghai Tibet Plateau, further modifications and improvements have been made to the relevant geological content in the region. Data application achievements and prospects: The database mainly serves the study of mineralization laws in mineralization zones and the compilation of mineralization law maps, with a scale of 1:1 million.