Classification of Zigrasite |
| IMA status: | Approved 2008 |
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| Nickel-Strunz 10th (pending) edition ID: | 8.CE.75
8 : PHOSPHATES, ARSENATES, VANADATES C : Phosphates without additional anions, with H2O E : With only medium-sized cations, RO4:H2O about 1:2.5 |
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| Dana 8th edition ID: | 40.1.5.2
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES 1 : AB(XO4)·xH2O |
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| mindat.org URL: | http://www.mindat.org/min-39007.html Please feel free to link to this page. |
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Type Occurrence of Zigrasite |
| Type Locality: | Dunton Gem Quarry, Newry, Oxford Co., Maine, USA |
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| General Appearance of Type Material: | subhedral blocky grains sometimes exceeding 1 mm in max. dimension |
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| Associated Minerals at type locality: | |
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Physical Properties of Zigrasite |
| Lustre: | Vitreous |
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| Diaphaneity (Transparency): | Translucent |
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| Colour: | Pale-yellow or light tan, also orange to off-white |
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| Hardness (Mohs): | 3 |
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| Density (measured): | 2.76(4) g/cm3 |
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| Density (calculated): | 2.66 g/cm3 |
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Crystallography of Zigrasite |
| Crystal System: | Triclinic |
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| Class (H-M): | 1 - Pinacoidal |
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| Space Group: | P1 |
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| Cell Parameters: | a = 5.3049(2) Å, b = 9.3372(4) Å, c = 9.6282(4) Å α = 97.348(1)°, β = 91.534(1)°, γ = 90.512(1)° |
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| Ratio: | a:b:c = 0.568 : 1 : 1.031 |
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| Unit Cell Volume: | V 472.79 ų (Calculated from Unit Cell) |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 9.550 | | (100) | | 4.589 | | (40) | | 4.411 | | (50) | | 4.108 | | (70) | | 4.008 | | (50) | | 3.569 | | (30) | | 3.177 | | (40) | | 2.660 | | (30) |
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Chemical Properties of Zigrasite |
| Formula: | |
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| Essential elements: | H, Mg, O, P, Zr |
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| All elements listed in formula: | H, Mg, O, P, Zr |
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Relationship of Zigrasite to other Species |
Related Minerals - Nickel-Strunz Grouping):
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Other Names for Zigrasite |
| 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 Zigrasite |
Reference List:
- + | Mineralogical Magazine 73,415-420(2009) |
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Internet Links for Zigrasite |
| Search Engines: |
Look for Zigrasite on Google
Look for Zigrasite images on Google |
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| External Links: | Look for Zigrasite on WebmineralLook for Zigrasite on Athena Mineralogy[Link Broken?]Look for Zigrasite 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 Zigrasite |
The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the  symbol to view information about a locality.
The  symbol next to localities in the list
can be used to jump to that position on the map.
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