Classification of Guimarãesite |
| IMA status: | Approved 2006 |
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| Strunz 8th edition ID: | 7/D.01-53
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| Nickel-Strunz 10th (pending) edition ID: | 8.DA.10
8 : PHOSPHATES, ARSENATES, VANADATES D : Phosphates, etc. with additional anions, with H2O A : With small (and occasionally larger) cations |
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| mindat.org URL: | http://www.mindat.org/min-30764.html Please feel free to link to this page. |
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Type Occurrence of Guimarãesite |
| Type Locality: | Guimarãesite occurrence, Piauí valley, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Brazil |
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Crystallography of Guimarãesite |
| Crystal System: | Monoclinic |
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| Class (H-M): | 2/m - Prismatic |
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| Space Group: | B2/b {B1 1 2/b} {C2/c} {C1 2/c 1} |
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| Cell Parameters: | a = 15.98Å, b = 11.84Å, c = 6.63Å β = 95.15° |
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| Ratio: | a:b:c = 1.35 : 1 : 0.56 |
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| Unit Cell Volume: | V 1,249.35 ų (Calculated from Unit Cell) |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 9.48 | | (90) | | 5.98 | | (100) | | 4.82 | | (80) | | 3.152 | | (90) | | 3.052 | | (70) | | 2.961 | | (70) | | 2.841 | | (70) | | 2.708 | | (80) |
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Chemical Properties of Guimarãesite |
| Formula: | | Ca | | (Zn,Mg,Fe | | ) | | Be | | (PO | | ) | | (OH) | | · 6H | | O |
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| Essential elements: | Be, Ca, H, O, P, Zn |
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| All elements listed in formula: | Be, Ca, Fe, H, Mg, O, P, Zn |
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Relationship of Guimarãesite to other Species |
| Member of: | Roscherite Group |
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Other Members of Group:
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Related Minerals - Nickel-Strunz Grouping):
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Other Names for Guimarãesite |
| Synonyms: | |
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| Other Languages: | |
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Other Information |
| Health Warning: | No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. |
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References for Guimarãesite |
Reference List:
- + | Chukanov N V et al (2007) Guimarãesite, a new Zn-dominant monoclinic roscherite-group mineral from Itinga, Minas Gerais, Brazil, New Data on Minerals. Moscow, 42, 11-15 |
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Internet Links for Guimarãesite |
| Search Engines: |
Look for Guimarãesite on Google
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| External Links: | Look for Guimarãesite on WebmineralLook for Guimarãesite on Athena MineralogyLook for Guimarãesite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure Database |
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| Jobs: | Mining & Geology Jobs |
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Localities for Guimarãesite |
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