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: | off-white to pale-yellow or light tan |
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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) |
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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
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| External Links: | Look for Zigrasite on WebmineralLook for Zigrasite on Athena MineralogyLook for Zigrasite on WikipediaLook for Zigrasite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Zigrasite in the Natural History Museum (London) online catalogue |
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| Mineral Dealers: | Search for - Zigrasite - on e-Rocks Mineral Sales & AuctionsBuy from David K Joyce mineralsWilensky Fine MineralsRare and Unusual minerals at Mineralogical Research CompanyEdwards Minerals - Fine SpecimensFind Zigrasite on www.crystalclassics.co.ukHigh-end worldwide specimens & outstanding customer serviceBuy Fine Minerals from mineralsweb.comBuy Minerals and Crystals from Crystalarium.comTop quality minerals from Kristalle of CaliforniaFabre Minerals - search for Zigrasite specimensThe Arkenstone - Fine Minerals |
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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
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