Shannonite Mineral Data + 
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- 16a.3.10.1 Shannonite ! Pb2OCO3 2 2 2
- V/C.08-05 Shannonite Pb2OCO3 2 2 2
- V/C.08-10 Hydrocerussite Pb3(CO3)2(OH)2 P 31m 3m
- V/C.08-20 Plumbonacrite Pb10(CO3)6O(OH)6 Unk Hex
General Shannonite Information |
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 Chemical Formula: |
Pb2OCO3 | ||
| Composition: |
Molecular Weight = 490.41 gm | ||
| Lead 84.50 % Pb 91.03 % PbO | |||
| Carbon 2.45 % C 8.97 % CO2 | |||
| Oxygen 13.05 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Pb2O(CO3) | ||
| Environment: |
In silicified breccia. | ||
| IMA Status: |
Approved IMA 1993 (Dana # Added) | ||
| Locality: |
Grand Reef mine, Graham County, Arizona, USA. Link to MinDat.org Location Data. | ||
| Name Origin: |
For David M. Shannon (1942- ), a mineral dealer who helped collect the first samples of the mineral. | ||
| Synonym: |
IMA1993-053 | ||
Search for Shannonite Images | |||
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Images:
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Shannonite Crystallography |
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| Axial Ratios: |
a:b:c =1.0326:1:0.5703 | ||
| Cell Dimensions: |
a = 9.294, b = 9, c = 5.133, Z = 5; V = 429.35 Den(Calc)= 9.48 | ||
| Crystal System: |
Orthorhombic - DisphenoidalH-M Symbol (2 2 2) | ||
Physical Properties of Shannonite |
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| Cleavage: |
None | ||
| Color: |
White. | ||
| Density: |
9.31 | ||
| Diaphaniety: |
Opaque | ||
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. | ||
| Habit: |
Encrustations - Forms crust-like aggregates on matrix. | ||
| Habit: |
Platy - Sheet forms (e.g. micas). | ||
| Habit: |
Porcelainous - Fine-grained, translucent massive material like broken china | ||
| Hardness: |
3-3.5 - Calcite-Copper Penny | ||
| Luminescence: |
Non-fluorescent. | ||
| Luster: |
Waxy | ||
| Streak: |
white | ||
Optical Properties of Shannonite |
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| Gladstone-Dale: |
CI meas= 0.504 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0.513 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.0682,KPDmeas= 0.0695,KC= 0.14 |
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| Optical Data: |
Biaxial (+), a=1.642, b=1.645, g=1.654, bire=0.0120, 2V(Calc)=62, 2V(Meas)=52. | ||
Calculated Properties of Shannonite |
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| Electron Density: |
relectron=7.67 gm/cc |
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| Fermion Index |
Fermion Index = 0.18707 Boson Index = 0.81293 |
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| Photoelectric: |
PEShannonite =1,574.65 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Shannonite is Not Radioactive |
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Shannonite Classification |
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| Dana Class: |
16a.3.10.1 (16a)Carbonates - Hydroxyl or Halogen | ||
| (16a.3)where (A B)2 (XO3) Zq | |||
| (16a.3.10)Dana Group | |||
| Strunz Class: |
V/C.08-05 V - Nitrates, Carbonates and Borates | ||
| V/C - Waterfree carbonates with unfamiliar anions | |||
| V/C.08 - Hydrocerussite - Barstowite series | |||
Other Shannonite Information |
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| References: |
NAME( MinRec) PHYS. PROP.(MinRec) OPTIC PROP.(Am.Min.,Vol.81,1996) | ||
| See Also: |
Links to other databases for Shannonite : 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 Search for Shannonite using: Visit our Advertisers for Shannonite : AA Mineral SpecimensB & L Fine Minerals Crystal Vaults Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals Rockshop.cz T G Fine Minerals Wrights Rock Shop Translate Shannonite Mineral Data : Ask about Shannonite here : Print or Cut-and-Paste your Shannonite Specimen Label here :
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