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Calcioaravaipaite

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About CalcioaravaipaiteHide

Formula:
PbCa2AlF9
Colour:
colorless to white
Lustre:
Vitreous
Hardness:
Specific Gravity:
4.85
Crystal System:
Triclinic
Name:
Named in allusion to its relationship as the CALCIum analogue of Aravaipaite.
Closely related to Aravaipaite (which is Pb-dominant and contains an additional water molecule).

See also Unnamed (Ba-analogue of Calcioaravaipaite).


Classification of CalcioaravaipaiteHide

Approved
Approval Year:
1994
3.DC.37

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
C : With Pb (As,Sb,Bi), without Cu

Physical Properties of CalcioaravaipaiteHide

Vitreous
Transparency:
Transparent
Colour:
colorless to white
Streak:
white
Hardness:
2½ on Mohs scale
Cleavage:
Distinct/Good
Good on the {100}
Fracture:
Conchoidal
Density:
4.85 g/cm3 (Measured)    4.62 g/cm3 (Calculated)

Optical Data of CalcioaravaipaiteHide

Type:
Biaxial (-)
RI values:
nα = 1.510 nβ = 1.528 nγ = 1.531
2V:
Measured: 36° , Calculated: 44°
Max Birefringence:
δ = 0.021
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r > v strong

Chemical Properties of CalcioaravaipaiteHide

Formula:
PbCa2AlF9

Crystallography of CalcioaravaipaiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Cell Parameters:
a = 7.72 Å, b = 7.51 Å, c = 12.2 Å
α = 98.86°, β = 96.91°, γ = 90°
Ratio:
a:b:c = 1.028 : 1 : 1.625
Unit Cell V:
694.88 ų

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.9 Å(100)
3.71 Å(70)
3.51 Å(85)
2.981 Å(60)
2.943 Å(60)
2.028 Å(60)
1.971 Å(60)

Type Occurrence of CalcioaravaipaiteHide

Synonyms of CalcioaravaipaiteHide

Other Language Names for CalcioaravaipaiteHide

Related Minerals - Nickel-Strunz GroupingHide

3.DC.05LaurionitePbCl(OH)Orth. mmm (2/m 2/m 2/m)
3.DC.05ParalaurionitePbCl(OH)Mon. 2/m : B2/m
3.DC.10FiedleritePb3FCl4(OH) · H2OMon. 2/m
3.DC.15PenfielditePb2Cl3(OH)Hex. 6 : P6
3.DC.20LaurelitePb7F12Cl2Hex. 6 : P6
3.DC.25BismocliteBiOClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
3.DC.25Daubréeite(BiO)(OH,Cl)Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
3.DC.25MatlockitePbFClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
3.DC.25RorisiteCaFClTet.
3.DC.25Zavaritskite(BiO)FTet.
3.DC.25ZhangpeishaniteBaFClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
3.DC.30NadoritePbSbClO2Orth. mmm (2/m 2/m 2/m) : Cmcm
3.DC.30PeritePbBiClO2Orth. mmm (2/m 2/m 2/m) : Cmcm
3.DC.35AravaipaitePb3AlF9 · H2OTric.
3.DC.40ThorikositePb3Cl2(OH)(SbO3,AsO3)Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
3.DC.45MereheaditePb47Cl25(OH)13O24(CO3)(BO3)2Mon. m
3.DC.50BlixitePb8O5(OH)2Cl4Orth.
3.DC.55PinalitePb3WO5Cl2Orth.
3.DC.60SymesitePb10(SO4)O7Cl4 · H2OTric. 1 : P1
3.DC.65EcdemitePb6Cl4(As2O7)Mon. 2 : P21
3.DC.65HeliophyllitePb6Cl4(As2O7)Orth.
3.DC.70MendipitePb3Cl2O2Orth. 2 2 2 : P21 21 21
3.DC.75DamaraitePb3Cl(OH)O2Orth. mm2 : Pmc21
3.DC.80OnoratoiteSb8Cl2O11Tric. 1 : P1
3.DC.85CotunnitePbCl2Orth. mmm (2/m 2/m 2/m)
3.DC.90PseudocotunniteK2PbCl4Orth.
3.DC.95BarstowitePb4Cl6(CO3) · H2OMon. 2/m : P21/m

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for CalcioaravaipaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kampf, A. R. and Foord, E. E. (1996): Calcioaravaipaite, a new mineral, and associated lead fluoride minerals from the Grand Reef mine, Graham County, Arizona. Mineralogical Record 27, 293-300.
Mineralogical Record: 28: 220.
Kampf, A. R., Merlino, S. & Pasero, M. (2003): Order-disorder approach to calcioaravaipaite, [PbCa2Al(F,OH)9]: The crystal structure of the triclinic MDO polytype. American Mineralogist 88, 430-435.
Kampf, A.R., Yang, H., Downs, R.T., Pinch, W.W. (2011): The crystal structures and Raman spectra of aravaipaite and calcioaravaipaite. American Mineralogist, 96, 402-407.

Internet Links for CalcioaravaipaiteHide

Localities for CalcioaravaipaiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Italy
 
  • Campania
    • Naples
      • Somma-Vesuvius Complex
Campostrini, I., Gramaccioli, C. (2005): Artroeite del Monte Somma-Vesuvio: secondo ritrovamento mondiale. Riv. Mineral. Ital., 29, 1: 50-52. ; M. Russo & I. Campostrini (2011): Ammineite, matlockite and post 1944 eruption fumarolic minerals at Vesuvius. Plinius 37, 312.
USA (TL)
 
  • Arizona
    • Graham Co.
      • Aravaipa Mining District
        • Santa Teresa Mountains
          • Klondyke
            • Grand Reef Mountain
              • Laurel Canyon
Kampf, A.R. & E.E. Foord (1996), Calcioaravaipaite a new mineral and associated lead fluoride minerals from the Grand Reef Mine, Graham County, Arizona. Mineralogical Record: 27: 293-300; Grant, Raymond W., Richard A. Bideaux & Sidney A. Williams (2006), Minerals Added to the Arizona List 1995 to 2005: 3.
 
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