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8 results for “Tourmaline”
Environmental and Mineralogical Characteristics of Tourmaline-bearing localities in the United States
<p><strong>Background</strong></p> <p>This dataset contains the compiled mineralogical records of 458 tourmaline-bearing sites in the United States. Environmental parameters associated with each locality such as surface temperature, precipitation, and geothermal gradient have also been recorded. Geological processes were identified for each locality using site and mineral descriptions from mineral databases and they were also interpreted using machine learning algorithms. Market basket analysis algorithms were utilized to identify patterns within the mineralogical data and these patterns were attributed to the geological processes listed in the dataset.</p> <p><strong>Data Sources</strong></p> <p>Mineral occurrence data were retrieved from Mindat.org for the tourmaline minerals schorl, dravite, elbaite, uvite, and foitite. Mineral descriptions listed in the Handbook of Mineralogy (Anthony et al., 2004) web database aided in the identification of different geological processes. Geothermal gradient data are interpolated from values listed in geothermal temperature studies conducted by Batir et al. (2013), Kron and Stix (1982), and Nathenson and Guffanti (1987). Elevation data were retrieved from the USGS Elevation Point Query Service and the climatic data from the WorldClim dataset. Köppen-Geiger climatic zones were assigned to each locality using data published by Kottek et al. (2006) and made available at http://koeppen-geiger.vu-wien.ac.at/</p> <p><strong>Version Two</strong></p> <p>The second version of this dataset (TourmalineLocalitiesV2.csv) contains the initial tourmaline-bearing sites retrieved from the Mindat mineral database plus 389 randomly generated test localities. The randomly generated locations have all of the same parameters as the initial dataset with the mineralogy being extracted from mineral surface models. Natural neighbor interpolation was used to generate surface models for each individual mineral in the dataset and the mineralogy for each test locality was extracted from the models. The first version of the dataset also did not have coordinates for each site and those have been added in this version. </p>
Dataset: Tourmaline Bio, Inc. (TRML) Stock Performance
This dataset provides historical stock market performance data for specific companies. It enables users to analyze and understand the past trends and fluctuations in stock prices over time. This information can be utilized for various purposes such as investment analysis, financial research, and market trend forecasting.
Crystallographic Information Files of K-bearing tourmaline from Kazakhstan
<p>Crystallographic Information Files on K-bearing tourmalines from Kazakhstan. Data collected with a BRUKER KAPPA APEX II and evaluated with SHELXl </p>
Tourmaline files for Sterivex eDNA testing
<p><strong>Tourmaline and QIIME 2 files for 12S (fish) and 16S (microbes) amplicon metabarcoding associated with Sterivex eDNA methods development in Biscayne Bay, Florida </strong>(<a href="https://github.com/aomlomics/sterivex">https://github.com/aomlomics/sterivex</a>).</p> <p>Files are associated with sequence processing using either stand-alone QIIME 2 (12S folder) or <a href="https://github.com/aomlomics/tourmaline">Tourmaline</a> (16S folder), which is a recently developed program that wraps QIIME 2 and Snakemake. Taxonomy was assigned to sequences using QIIME 2-formatted reference database for 16S (SILVA; v.138.1), 16S chloroplasts (PR2; v.4.12), and 12S (<a href="https://zenodo.org/record/4589660#.YONRCRNKg_U">Mitohelper; March 2021 release</a>).</p> <p>Folders with intermediate and final output files:</p> <ul> <li>16S folder - file outputs from Tourmaline</li> <li>16S chloroplast folder - files from QIIME 2</li> <li>12S folder - files from QIIME 2</li> </ul> <p>Reference database artifact files (.qza) used to assign taxonomy:</p> <ul> <li>silva-138-99-tax.qza</li> <li>silva-138-99-seqs.qza</li> <li>pr2_plastid_seqs.qza</li> <li>pr2_plastid_tax.qza</li> <li>12S-16S-18S-seqs_March2021.qza </li> <li>12S-16S-18S-tax_March2021.qza </li> </ul> <p> </p> <p>These files are associated with the following project: <a href="https://github.com/aomlomics/sterivex">https://github.com/aomlomics/sterivex</a>. Raw FASTQ sequence data are available in NCBI SRA under BioProject ID PRJNA728349.</p>
Tutorial output for Tourmaline amplicon sequence processing workflow
<p>Tutorial output for the <a href="https://github.com/aomlomics/tourmaline">Tourmaline</a> amplicon sequence processing workflow.</p> <p>Tourmaline was run on the test data provided in the directory <a href="https://github.com/aomlomics/tourmaline/tree/master/00-data">00-data</a>, which were downloaded along with the rest of the repository using this command:</p> <pre><code>git clone https://github.com/aomlomics/tourmaline</code></pre> <p>Reference data were downloaded and symlinked using these commands:</p> <pre><code>cd tourmaline/01-imported wget https://data.qiime2.org/2021.2/common/silva-138-99-seqs-515-806.qza wget https://data.qiime2.org/2021.2/common/silva-138-99-tax-515-806.qza ln -s silva-138-99-seqs-515-806.qza refseqs.qza ln -s silva-138-99-tax-515-806.qza reftax.qza</code></pre> <p>Paths in 00-data/manifest_pe.csv and 00-data/manifest_se.csv were edited to match the local paths.</p> <p>Output for all modes of the workflow were then generated in series:</p> <pre><code>conda activate qiime2-2021.2 snakemake dada2_pe_report_unfiltered snakemake dada2_pe_report_filtered snakemake dada2_se_report_unfiltered snakemake dada2_se_report_filtered snakemake deblur_se_report_unfiltered snakemake deblur_se_report_filtered</code></pre> <p> </p>
Documenting the evolution of tourmaline-bearing localities in the United States
<p>This dataset contains geological interpretations for tourmaline-bearing localities that are listed in the Mindat.org database. This Excel spreadsheet is separated into three sheets containing variables describing environmental and mineralogical characteristics of tourmaline-bearing sites in the United States. Localities listed under the "Training sites" sheet have descriptions that are based upon mineralogical and geological reports made by contributors to the Mindat.org database. More information regarding the retrieval of the different variables listed can be found at zenodo.org/record/4110642#.X5bxc0eSnYU</p> <p>The locality descriptions were then used to make predictions regarding how these localities likely evolved through geologic time. The sites were given labels that contain a series of geological processes listed under the columns "Simple_Evolution" and "Complex_Evolution" of the "Site evolution" tab. Geologic processes included in the Simple and Complex evolutionary sequences have been described below.</p> <p><strong>Simple_Evolution: </strong><em>HE: </em>hypogene (hydrothermal activity with fluids originating from deep within the Earth) hydrothermal activity<em>. </em><em>I: </em>igneous rocks or some magmatic process. <em>M: </em>metamorphic process. <em>S: sedimentary rocks or active sedimentary processes. SE: </em>supergene (hydrothermal activity with fluids originating from at or near the Earth's surface) hydrothermal alteration. </p> <p><strong>Complex_Evolution: </strong><em>CaMgSe</em>: calcium-magnesium-rich carbonate sediments. <em>CaSk</em>: calcic skarns. <em>CP</em>: complex pegmatites. <em>FC</em>: felsic composition igneous rocks. G: greisenization. <em>HE: </em>hypogene hydrothermal activity. <em>IC</em>: intermediate composition igneous rocks. <em>M: </em>metamorphic process. <em>MC</em>: mafic composition igneous rocks. <em>PSe</em>: clay-rich sediments. <em>S: sedimentary rocks or active sedimentary processes. SE: </em>supergene hydrothermal activity. <em>Serp: </em>serpentinization. <em>SiSe</em>: siliciclastic sediments. <em>SP</em>: pegmatites with simpler mineralogies dominated by quartz, microcline, and muscovite. <em>VSe</em>: volcanoclastic sediments. <em>WSk: </em>tungsten-rich skarn. WSnSk: tungsten-tin-rich skarn. </p> <p>The labels assigned to the training sites were then used to train random forests and decision tree algorithms to assign evolutionary sequences to unseen mineralogical and environmental data. The "Test sites" tab contains 389 sites located within the conterminous United States and Alaska. These sites were randomly selected and mineralogical and environmental surface models were used to extract the associated variables (more information regarding the methods used at zenodo.org/record/4110642#.X5bxc0eSnYU). Results from the decision tree (DT) and random forests (RF) classifications of the Simple and Complex evolutionary sequences are listed under the "Site evolution" tab for each test location.</p>
Bodhgayā, Bihār. Pink tourmaline, natural unpolished crystal.
<p>Bodhgayā, Bihār. Pink tourmaline, natural unpolished crystal. British Museum 1892,1103.63 presented by Alexander Cunningham.</p>
Bodhgayā, Bihār. Beryl, variety emerald (some possibly tourmaline).
<p>Bodhgayā, Bihār. Beryl, variety emerald, with some pale malachite, tourmaline (?) and translucent green glass. British Museum 1892,1103.56-57 presented by Alexander Cunningham.</p>
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