Osarizawaite (original) (raw)
Formula:
Pb(Al2Cu2+)(SO4)2(OH)6
Al:Cu is 2:1 in the ideal end-member.
Specific Gravity:
3.89 - 4.037
Name:
From the type locality, the Osarizawa mine, Kazuno City, Honshu Island, Japan.
Forms a solid solution series with its Fe(III) analogue beaverite-(Cu).
Note: Visual identification is impossible; many members of the alunite supergroup can have similar appearances.
7.BC.10
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
30.2.4.4
30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
2 : (AB)2(XO4)Zq
25.7.9
25 : Sulphates
7 : Sulphates of Pb
RI values:
_n_ω = 1.712(3) _n_ε = 1.732(2)
δ = 0.020
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Comments:
O = dark yellow
E = pale yellowish
Class (H-M):
3_m_ _(_32/m ) - Hexagonal Scalenohedral
Cell Parameters:
a = 7.05 Å, c = 17.24(1) Å
Unit Cell V:
742.07 ų (Calculated from Unit Cell)
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0014767 | Osarizawaite | Giuseppetti G, Tadini C (1980) The crystal structure of osarizawaite Neues Jahrbuch fur Mineralogie, Monatshefte 1980 401-407 | 1980 | Osarizawa mine, Akita Prefecture, Honshu, Japan | 0 | 293 |
CIF Raw Data - click here to close
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.79 Å | (70) |
| 3.52 Å | (60) |
| 3.00 Å | (100) |
| 2.87 Å | (60) |
| 2.28 Å | (60) |
| 2.23 Å | (30) |
| 1.918 Å | (30) |
Comments:
Osarizawa mine, Japan. The data are from the type description.
General Appearance of Type Material:
Earthy and friable masses.
Place of Conservation of Type Material:
GCL, Perth, Australia, number MDC 3291 (holotype).
National Science Museum, Tokyo, Japan, number M-15598 (type).
Geological Setting of Type Material:
Oxidized zone of lead-zinc-copper veins.
Associated Minerals at Type Locality:
Reference:
Taguchi, Y. (1961) On osarizawaite, a new mineral of the alunite group, from the Osarizawa mine, Japan. Mineralogical Journal: 3: 181-194.
Notes:
Insoluble in water and practically shows no reaction to nitric acid. Boiling concentrated hydrochloric or sulphuric acid disintegrates the mineral perfectly and precipitates lead chloride or lead sulphate.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
This 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.
- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 
- Good crystals or important locality for species. 
- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.