Classification of Alpersite |
| IMA status: | Approved 2003 |
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| Strunz 8th edition ID: | 6/C.06-05
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| Nickel-Strunz 10th (pending) edition ID: | 7.CB.35
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates) C : Sulfates (selenates, etc.) without additional anions, with H2O B : With only medium-sized cations |
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| mindat.org URL: | http://www.mindat.org/min-27526.html Please feel free to link to this page. |
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Type Occurrence of Alpersite |
| Type Locality: | Big Mike mine, Tobin and Sonoma Range District, Pershing Co., Nevada, USA |
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| Associated Minerals at type locality: | |
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Physical Properties of Alpersite |
| Lustre: | Vitreous |
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| Diaphaneity (Transparency): | Transparent |
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| Colour: | Blue |
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Crystallography of Alpersite |
| Crystal System: | Monoclinic |
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| Class (H-M): | 2/m - Prismatic |
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| Space Group: | P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a} |
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| Cell Parameters: | a = 14.166Å, b = 6.534Å, c = 10.838Å β = 105.922° |
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| Ratio: | a:b:c = 2.168 : 1 : 1.659 |
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| Unit Cell Volume: | V 964.69 ų (Calculated from Unit Cell) |
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| Z: | 4 |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 4.85 | | (100) | | 4.79 | | (14) | | 4.44 | | (16) | | 3.779 | | (38) | | 3.663 | | (15) | | 3.254 | | (15) | | 3.078 | | (14) |
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| Comments: | From type description |
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Optical Data of Alpersite |
| Type: | Biaxial (+) |
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| RI values: | nα = 1.462 nβ = 1.465 nγ = 1.469 |
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| 2V: | Measured: 79° , Calculated: 82° |
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| Maximum Birefringence: | δ = 0.007
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Moderate |
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Chemical Properties of Alpersite |
| Formula: | |
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| All elements listed in formula: | Cu, H, Mg, O, S |
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| Common Impurities: | Zn,Mn,Fe |
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Relationship of Alpersite to other Species |
| Member of Group: | |
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Related Minerals - Nickel-Strunz Grouping):
- + | |
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Other Names for Alpersite |
| 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 Alpersite |
| Reference List: | Peterson, R.C., Hammarstrom, J.M., Seal, R.R., II (2006): "Alpersite (Mg,Cu)SO4•7H2O, a new mineral of the melanterite group, and cuprian pentahydrite: their occurrence within mine waste", American Mineralogist 91, 261-269.
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Internet Links for Alpersite |
| Search Engines: |
Look for Alpersite on Google
Look for Alpersite images on Google |
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| External Links: | Look for Alpersite on WebmineralLook for Alpersite on Athena MineralogyLook for Alpersite on WikipediaLook for Alpersite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Alpersite in the Natural History Museum (London) online catalogue |
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| Mineral Dealers: | Buy from David K Joyce mineralsFind Alpersite on www.crystalclassics.co.ukMineral Classics - Worldwide Collector Quality Minerals and GemsDAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.SpiriferMinerals.com - high quality specimensSearch for - Alpersite - on e-Rocks Mineral Sales & AuctionsWilensky Fine MineralsLapis Mineral MagazinTop quality minerals from Kristalle of CaliforniaWendel Minerals - Auktion & ShopWright's Rock Shop - excellent mineral specimens since 1970The Arkenstone - Fine Minerals |
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| Jobs: | Mining & Geology Jobs |
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Localities for Alpersite |
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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