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 Island, 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 MineralogyLook for Mikasaite on WikipediaLook for Mikasaite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Mikasaite in the Natural History Museum (London) online catalogueMikasaite details from Handbook of Mineralogy (PDF) |
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Localities for Mikasaite |
