Classification of Mikasaite |
| IMA status: | Approved |
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| Strunz 8th edition ID: | 6/A.02-20
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| Nickel-Strunz 10th (pending) edition ID: | 7.AB.05
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
A : Sulfates (selenates, etc.) without additional anions, without H2O
B : With medium-sized cations |
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| Dana 8th edition ID: | 28.4.5.2
28 : ANHYDROUS ACID AND NORMAL SULFATES
4 : Miscellaneous |
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| mindat.org URL: | http://www.mindat.org/min-2709.html
Please feel free to link to this page. |
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Type Occurrence of Mikasaite |
| Type Locality: | Ikushunbetsu, Mikasa City, Sorachi Province, Hokkaido, Japan |
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| General Appearance of Type Material: | Aggregates of porous spherical crystals. |
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| Year of Discovery: | 1994 |
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| Geological Setting of type material: | From fracture near burning coal seam. |
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Physical Properties of Mikasaite |
| Lustre: | Dull |
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| Comment: | Semitransparent |
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| Colour: | White to light brown |
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| Streak: | White to light brown |
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| Hardness (Mohs): | 2 |
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| Density (calculated): | 3.06 g/cm3 |
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Crystallography of Mikasaite |
| Crystal System: | Trigonal |
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| Class (H-M): | 3 - Rhombohedral |
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| Space Group: | R3 |
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| Cell Parameters: | a = 8.14(1) Å, c = 21.99(8) Å
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| Ratio: | a:c = 1 : 2.701 |
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| Unit Cell Volume: | V 1,261.84 ų (Calculated from Unit Cell) |
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| Z: | 6 |
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| Comment: | On synthetic material |
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Optical Data of Mikasaite |
| Type: | Uniaxial (+) |
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| RI values: | nω = 1.504() nε = 1.518(3) |
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| Maximum Birefringence: | δ = 0.014
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Low |
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Chemical Properties of Mikasaite |
| Formula: | |
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| Essential elements: | Fe, O, S |
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| All elements listed in formula: | Fe, O, S |
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| Empirical Formula: | |
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| Common Impurities: | Mn |
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Relationship of Mikasaite to other Species |
Related Minerals - Nickel-Strunz Grouping):
- + | |
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Other Names for Mikasaite |
| Synonyms: | |
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| Other Languages: | |
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Other Information |
| Other Information: | Deliquescent, dissolving in adsorbed water. |
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| 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 Mikasaite |
Reference List:
- + | Mineralogical Magazine (1994): 58: 649-653
New Minerals (1997), New Minerals 1990-1994.
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Internet Links for Mikasaite |
| Search Engines: |
Look for Mikasaite on Google
Look for Mikasaite images on Google |
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| External Links: | Look for Mikasaite on WebmineralLook for Mikasaite on Athena Mineralogy[Link Broken?]Look for Mikasaite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseMikasaite details from Handbook of Mineralogy (PDF) |
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| Jobs: | Mining & Geology Jobs |
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Localities for Mikasaite |
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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Mineral and Locality Search
