Pronunciation Guide 
General Information |
|
 Chemical Formula: |
(Na,Ca,K)Al3(SO4)2(OH)6 |
| IMA Status: |
Approved IMA |
Classification |
|
| Dana Class: |
30.2.4.5 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen |
| (30.2)where (A B)2 XO4 Zq· x(H2O) | |
| (30.2.4)Alunite Group (Alunite Subgroup) | |
| Strunz Class: |
VI/B.11-40 VI - Sulfates,Chromates,Molybdates and Tungstates |
| VI/B - Waterfree sulfates [SO4]2- with unfamiliar anions. mostly big cations | |
| VI/B.11 - Alunite group, Natroalunite - Jarosite - Beaverite | |
Crystallography |
|
| Axial Ratios: |
a:c = 1:4.7973 |
| Cell Dimensions: |
a = 6.981, c = 33.49, Z = 6; V = 1,413.45 |
| Crystal System: |
Trigonal - Hexagonal Scalenohedral H-M Symbol (-3 2/m) Space Group: R3m- |
| X Ray Diffraction: |
By Intensity(I/Io): 2.959(1) 4.901(0.92) 2.975(0.47) |
Physical Properties |
|
| Color: |
white. |
| Density: |
2.8 |
| Diaphaniety: |
Transparent to Translucent |
| Hardness: |
3-4 - Calcite-Fluorite |
| Luster: |
Vitreous (Glassy) |
| Streak: |
white |
Other Information |
|
| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
| See Also: |
Links to other databases for Minamiite : 1 -American Mineralogist Crystal Structure Database 2 -Athena Mineralogy 3 - EUROmin Project 4 -MinDat.org Location Data 5 -MinMax 6 -WWW-MINCRYST 7 -École des Mines de Paris Search for Minamiite using: Visit our Advertisers for Minamiite : Ask about Minamiite here : |
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