Otwayite Mineral Data + 
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- 16b.3.2.1 Otwayite Ni2(CO3)(OH)2·(H2O) Unk Ortho
- V/E.05-10 Otwayite Ni2(CO3)(OH)2·(H2O) Unk Ortho
- V/E.05-20 Zaratite Ni3(CO3)(OH)4·4(H2O) Unk (in part amorphous) Cubic
- V/E.05-30 Kambaldaite NaNi4(CO3)3(OH)3·3(H2O) P 63 6
- V/E.05-40 Szymanskiite Hg16(Ni,Mg)6(H3O)8(CO3)12·3(H2O) P 63 6
General Otwayite Information |
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 Chemical Formula: |
Ni2(CO3)(OH)2·(H2O) | ||
| Composition: |
Molecular Weight = 229.42 gm | ||
| Nickel 51.16 % Ni 65.11 % NiO | |||
| Hydrogen 1.76 % H 15.71 % H2O | |||
| Carbon 5.24 % C 19.18 % CO2 | |||
| Oxygen 41.84 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Ni2(CO3)(OH)2·(H2O) | ||
| Environment: |
Late-stage fracture filling. | ||
| IMA Status: |
Approved IMA 1977 | ||
| Locality: |
Nullagine region of WA, Australia. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named after Charles Albert Otway (1922-), miner and prospector of Cosnells, WA, Australia. | ||
Otwayite Image | |||
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Images:
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Otwayite Crystallography |
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| Axial Ratios: |
a:b:c =0.3715:1:0.1175 | ||
| Cell Dimensions: |
a = 10.18, b = 27.4, c = 3.22, Z = 8; V = 898.16 Den(Calc)= 3.39 | ||
| Crystal System: |
OrthorhombicSpace Group: Unk | ||
| X Ray Diffraction: |
By Intensity(I/Io): 6.84(1), 5.67(0.8), 2.737(0.6), | ||
Physical Properties of Otwayite |
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| Color: |
Green, Bright green. | ||
| Density: |
3.41 | ||
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. | ||
| Habit: |
Fibrous - Crystals made up of fibers. | ||
| Hardness: |
4 - Fluorite | ||
| Luster: |
Silky | ||
| Streak: |
light green | ||
Optical Properties of Otwayite |
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| Gladstone-Dale: |
CI meas= 0.036 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.031 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2021,KPDmeas= 0.2009,KC= 0.2085 |
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| Optical Data: |
Biaxial (?), a=1.65, g=1.72, bire=0.0700 | ||
| Pleochroism (x): |
pale green. | ||
| Pleochroism (y): |
darker green. | ||
| Pleochroism (z): |
darker green. | ||
Calculated Properties of Otwayite |
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| Electron Density: |
relectron=3.37 gm/cc |
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| Fermion Index |
Fermion Index = 0.00656 Boson Index = 0.99344 |
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| Photoelectric: |
PEOtwayite = 20.10 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Otwayite is Not Radioactive |
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Otwayite Classification |
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| Dana Class: |
16b.3.2.1 (16b)Carbonates - Hydroxyl or Halogen | ||
| (16b.3)where Am Bn (XO3)p Zq · x(H2O), (m+n):p = 2:1 | |||
| (16b.3.2)Dana Group | |||
| Strunz Class: |
V/E.05-10 V - Nitrates, Carbonates and Borates | ||
| V/E - Water-bearing carbonates with unfamiliar anions | |||
| V/E.05 - Otwayite - Szymanskite series | |||
Other Otwayite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) | ||
| See Also: |
Links to other databases for Otwayite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris Search for Otwayite using: Visit our Advertisers for Otwayite : Translate Otwayite Mineral Data : Ask about Otwayite here : Print or Cut-and-Paste your Otwayite Specimen Label here :
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