General Parabrandtite Information![]() Ca2Mn++(AsO4)•2(H2O) |
![]() Molecular Weight = 448.96 gm |
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Calcium 17.85 % Ca 24.98 % CaO |
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Manganese 12.24 % Mn 15.80 % MnO |
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Arsenic 33.38 % As 51.19 % As2O5 |
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Hydrogen 0.90 % H 8.03 % H2O |
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Oxygen 35.64 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
![]() Ca2Mn2+(AsO4)2•2(H2O) |
![]() Found in a cavity in primary ore at Sterling. |
![]() Approved IMA 1987 |
![]() Sterling Hill mine, Susex County, New Jersey, USA. Link to MinDat.org Location Data. |
![]() Named for its dimorphic relationship to brandtite. |
![]() Parabrandtite + Pronunciation |
![]() | | Search for Parabrandtite Images
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| | Parabrandtite Crystallography![]() a:b:c =0.8377:1:0.8021 |
![]() a = 5.89, b = 7.031, c = 5.64, Z = 1; alpha = 96.77°, beta = 109.32°, gamma = 108.47° V = 207.60 Den(Calc)= 3.59 |
![]() TriclinicSpace Group: P1,P 1 |
![]() By Intensity(I/Io): 2.811(1), 3.09(0.8), 3.61(0.7), |
| Physical Properties of Parabrandtite![]() {010} Perfect, {110} Perfect |
![]() Colorless. |
![]() 3.55 |
![]() Transparent |
![]() Aggregates - Made of numerous individual crystals or clusters. |
![]() 3-4 - Calcite-Fluorite |
![]() Non-fluorescent. |
![]() Vitreous (Glassy) |
![]() white |
| Optical Properties of Parabrandtite![]() CI meas= -0.053 (Good) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.016 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1968,KPDmeas= 0.204,KC= 0.1938 Ncalc = 1.69 - 1.71 ![]() Biaxial (+), a=1.701, b=1.721, g=1.751, bire=0.0500, 2V(Calc)=80, 2V(Meas)=79.9. Dispersion r > v weak. |
| Calculated Properties of Parabrandtite![]() Bulk Density (Electron Density)=3.52 gm/cc |
note: Specific Gravity of Parabrandtite =3.68 gm/cc. ![]() Fermion Index = 0.0004134249 |
Boson Index = 0.9995865751 ![]() PEParabrandtite = 28.02 barns/electron |
U=PEParabrandtite x rElectron Density= 98.76 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Parabrandtite is Not Radioactive | Parabrandtite Classification![]() 40.02.02.08 (40)Hydrated Phosphates, etc |
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(40.02)where A++ (B++)2 (XO4) ˇ x(H2O) |
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(40.02.02)Fairfieldite Subgroup (Triclinic: P-1¯) |
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![]() 08.CG.05 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.C - Phosphates without Additional Anions, with H2O |
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08.CG -With large and medium-sized cations, RO4:H2O = 1:1 |
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| Other Parabrandtite Information![]() NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Am.Min.,Vol.73,p1496,1988) |
![]() Links to other databases for Parabrandtite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Franklin Minerals(Dunn) 6 - GeoScienceWorld 7 - Google Images 8 - Google Scholar 9 - Handbook of Mineralogy (MinSocAm) 10 - Handbook of Mineralogy (UofA) 11 - MinDAT 12 - Mineralienatlas (Deutsch) 13 - Online Mineral Museum 14 - QUT Mineral Atlas 15 - Ruff.Info Search for Parabrandtite using: Visit our Advertisers for Parabrandtite : A Bijoux Google Search for ParabrandtiteAdam's Minerals Google Search for Parabrandtite Cape Minerals Google Search for Parabrandtite Dakota Matrix Minerals Google Search for Parabrandtite Excalibur Mineral Corp. Google Search for Parabrandtite Exceptional Minerals Google Search for Parabrandtite John Betts Fine Minerals Search for Parabrandtite McDougall Minerals Google Search for Parabrandtite Mineral News Website Link Rock and Mineral Shows Google Search for Parabrandtite Weinrich Minerals, Inc. Google Search for Parabrandtite Ask about Parabrandtite here : Print or Cut-and-Paste your Parabrandtite Specimen Label here :
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