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This clearinghouse consists of crystallographic web sites. Topics include x-ray diffraction systems, sources & detectors, x-ray data, university crystallography laboratories, synchrotron, crystallographic tutorials, crystallographic software documentation (on-line), crystallographic software, crystallographic servers, crystallographic instrument accessories, crystallographic databases, crystallographic ... Full description.
Grade level: College (13-14), College (15-16), Graduate / Professional
Resource type: Clearinghouse
Subject: Geochemistry, Mineralogy or petrology
 
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This site consists of the lecture notes for an advanced mineralogy course at the University of Colorado taught by J. R. Smyth. The topics covered include symmetry, point groups, space groups, diffraction and structures, mineral spectroscopy, and descriptions of orthosilicates, sorosilicates, cyclosilicates, chain silicates, and layer silicates. Figures, photographs and tables are included with the ... Full description.
Grade level: College (13-14), College (15-16)
Resource type: Ref. material
Subject: Geochemistry, Mineralogy or petrology
 
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This site is an interface to a crystal structure database that includes every structure published in the American Mineralogist, the Canadian Mineralogist, and the European Journal of Mineralogy. The database is maintained under the care of the Mineralogical Society of America and the Mineralogical Association of Canada, and financed by the National Science Foundation. The site is searchable by mineral, ... Full description.
Grade level: College (15-16), Graduate / Professional
Resource type: In-situ dataset
Subject: Geochemistry, Mineralogy or petrology
 
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This searchable database, maintained by the Russian Foundation of Basic Research, includes 4785 entries (2365 unique mineral names). Each mineral can be searched by name, specification, crystal chemical formula, or crystal structure characteristics. The crystal structure information includes mineral name, specification, crystal chemical formula, space group, unit cell parameters, coordinates, thermal ... Full description.
Grade level: College (13-14), College (15-16), Graduate / Professional
Resource type: Ref. material, In-situ dataset
Subject: Geochemistry, Mineralogy or petrology
 
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The International Union of Crystallography maintains this clearinghouse of educational resources. There are many topics incorporated into this site, including applied crystallography, crystal growth, crystal structure analysis, crystals and their structures, diffraction, distance teaching, mathematical techniques, on-line courses, powder diffraction, and symmetry. This site would be useful for anyone ... Full description.
Grade level: College (13-14), College (15-16), Graduate / Professional
Resource type: Clearinghouse
Subject: Geochemistry, Mineralogy or petrology
 
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This site consists of a compilation of crystallographic and physical property data for most of the rock-forming minerals. Thirteen mineral groups are included: single oxides, multiple oxides, hydroxides, sulfates, phosphates, orthosilicates (neosilicates), sorosilicates and cyclosilicates, chain silicates (inosilicates), sheet silicates (phyllosilicates), framework silicates (tektosilicates), high ... Full description.
Grade level: College (13-14), College (15-16), Graduate / Professional
Resource type: Presentation / Demo, Illustration - scientific, In-situ dataset
Subject: Geochemistry, Mineralogy or petrology
 
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This site consists of an introductory lecture on crystal symmetry and symmetry operations. It provides the definition of a mineral and then covers topics including different types of rotational symmetry, mirror symmetry, the center of symmetry, different types of rotoinversion, and combinations of symmetry operations. Drawings help illustrate the concepts presented in the lecture. Full description.
Grade level: College (13-14), College (15-16)
Resource type: Illustration - scientific, Ref. material
Subject: Geochemistry, Mineralogy or petrology
 
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This site provides a detailed look at the crystal structure and compositional variations of amphiboles. Also discussed are ways to assess the quality of analyses from looking at the stoichiometry of mineral formulas, how to estimate ferric iron, and special considerations affecting formula recalculation. A 3-D model of the mineral's structure is also included. Full description.
Grade level: College (13-14), College (15-16)
Resource type: Illustration - scientific, Ref. material
Subject: Geochemistry, Mineralogy or petrology
 
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This site examines the crystal chemistry of some common mineral groups, including garnet, plagioclase, pyroxene, mica (muscovite and biotite), and amphibole. For each group, the topics considered include: the sites in the crystal structure on which the principal substitutions take place, the typical ranges of observed composition variation, how to assess the quality of analyses from looking at the ... Full description.
Grade level: College (15-16)
Resource type: Illustration - scientific, Ref. material
Subject: Geochemistry, Mineralogy or petrology
 
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This site is a lecture by Dr. Stephen Nelson from Tulane University that explores the 32 possible combinations of symmetry operations that define the external symmetry of crystals. The lecture defines the six crystal systems (triclinic, monoclinic, orthorhombic, tetragonal, hexagonal, and isometric) and explains the derivation of the Hermann-Mauguin symbols (also called the international symbols) ... Full description.
Grade level: College (15-16)
Resource type: Illustration - scientific, Ref. material
Subject: Geochemistry, Mineralogy or petrology
 
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