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This site is a table of crystallography groups. The table is composed of 32 classes of symmetry derived from observations of the external crystal form. From these 32 classes, 230 space groups are distinguishable using x-ray analysis. The site also features 3-D rotating examples of crystalline forms for each symmetry class. The illustrations are helpful for visualizing crystal forms. 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 clearinghouse consists of crystallography links with an emphasis on education and tutorials. There is also a search feature, which allows the user to explore a large crystallographic database. Additionally, the site is available in French. 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 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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