Calcioaravaipaite Mineral Data

General Calcioaravaipaite Information

Chemical Formula: PbCa2Al(F,OH)9 Composition: Molecular Weight = 483.33 gm    Calcium   16.58 %  Ca   23.20 % CaO    Aluminum   5.58 %  Al   10.55 % Al₂O₃    Hydrogen   0.21 %  H     1.86 % H₂O    Lead      42.87 %  Pb   46.18 % PbO    Oxygen     3.31 %  O    Fluorine  31.45 %  F    31.45 % F                -   %   F   -13.24 % -O=F₂                 ______        ______              100.00 %      100.00 % = TOTAL OXIDE Empirical Formula: PbCa₂AlF₈(OH) Environment: In a small epithermal lead-copper-silver deposit in a silicified breccia. IMA Status: Approved IMA 1996 (Dana # Added) Locality: The Grand Reef mine in Laurel Canyon, about 6 km northeast of Klondyke, Aravaipa mining district, Graham County, Arizona. USA. Link to MinDat.org Location Data. Name Origin: For the relationship with aravaipaite Name Pronunciation: Calcioaravaipaite + Pronunciation Synonym: IMA1994-018  

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Calcioaravaipaite Crystallography

Axial Ratios: a:b:c =1.0274:1:1.624 Cell Dimensions: a = 7.722, b = 7.516, c = 12.206, Z = 4; alpha = 98.86°, beta = 96.91°, gamma = 90° V = 694.88 Den(Calc)= 4.62 Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: C1 X Ray Diffraction: By Intensity(I/I_o): 11.9(1), 3.81(0.85), 3.71(0.7),2.981(0.6), Forms:

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Crystal Structure:

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Kampf A R , Merlino S , Pasero M , American Mineralogist , 88 (2003) p.430-435, Order-disorder approach to calcioaravaipaite, [PbCa2Al(F,OH)9]:, The crystal structure of the triclinic MDO polytype

 

Physical Properties of Calcioaravaipaite

Cleavage: {100} Good Color: Colorless, Milk white. Density: 4.85 Diaphaneity: Transparent Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals. Habit: Massive - Uniformly indistinguishable crystals forming large masses. Hardness: 2.5 - Finger Nail Luster: Vitreous (Glassy) Streak: white  

Optical Properties of Calcioaravaipaite

Optical Data: Biaxial (-), a=1.51, b=1.528, g=1.531, bire=0.0210, 2V(Calc)=44, 2V(Meas)=36. Dispersion r > v strong.  

Calculated Properties of Calcioaravaipaite

Electron Density: Bulk Density (Electron Density)=4.13 gm/cc
note: Specific Gravity of Calcioaravaipaite =4.62 gm/cc.
Fermion Index: Fermion Index = 0.09
Boson Index = 0.91 Photoelectric: PE_{Calcioaravaipaite} = 738.89 barns/electron
U=PE_{Calcioaravaipaite} x rElectron Density=3,051.13 barns/cc.
Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Calcioaravaipaite is Not Radioactive  

Calcioaravaipaite Classification

Dana Class: 11.06.22.01 (11)Halide Complexes; Alumino-fluorides   (11.06)with miscellaneous formulae   (11.06.22)Dana Group  

11.06.22.01 Calcioaravaipaite! PbCa2Al(F,OH)9 C1 1

Strunz Class: 03.DC.37 03 - HALIDES   03.D - Oxyhalides, Hydroxyhalides and Related Double Halides   03.DC -With Pb (As,Sb,Bi), without Cu  

03.DC.37 Calcioaravaipaite! PbCa2Al(F,OH)9 C1 1

 

Other Calcioaravaipaite Information

References: NAME( AmMin, V 38, No. 3) PHYS. PROP.(Am.Min.,Vol.88, p 430) OPTIC PROP.(Am.Min.,Vol.82,p207,1997) See Also: Links to other databases for Calcioaravaipaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
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