Aravaipaite Mineral Data

General Aravaipaite Information

Chemical Formula:

Pb3AlF9•(H2O)

Composition:

Molecular Weight = 837.58 gm

Aluminum 3.22 % Al 6.09 % Al₂O₃

Hydrogen 0.24 % H 2.15 % H₂O

Lead 74.21 % Pb 79.94 % PbO

Oxygen 1.91 % O

Fluorine 20.41 % F 20.41 % F

- % F -8.60 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Pb₃AlF₉•(H₂O)

Environment:

Reaction of supergene solutions on galena and fluorite.

IMA Status:

Approved IMA 1989

Locality:

Grand Reef mine, Laurel Canyon, Graham County, Arizona. Link to MinDat.org Location Data.

Name Origin:

Named for the Aravaipa mining district.

Name Pronunciation:

Aravaipaite + Pronunciation

Aravaipaite Image

Images:

Aravaipaite

Comments: Colorless thin tabular crystals of aravaipaite.
Location: Grand Reef Mine, Aravaipa District, Graham County, Arizona, USA. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Aravaipaite Crystallography

Axial Ratios:

a:b:c =4.2847:1:0.9717

Cell Dimensions:

a = 25.048, b = 5.8459, c = 5.6805, Z = 4; beta = 94.01° V = 829.75 Den(Calc)= 6.70

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 12.493(1)(200), 3.2358(0.89)(511), 3.1233(0.54)(800), 3.0803(0.47)(511), 3.3336(0.46)(411), 2.9032(0.46)(120), 3.4905(0.46)(411), 2.036(0.4)(122), 2.8333(

Physical Properties of Aravaipaite

Cleavage:

{100} Perfect, {110} Good, {010} Good

Color:

Colorless.

Diaphaneity:

Transparent

Fracture:

Flexible - Flexible fragments.

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

2 - Gypsum

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Pearly

Streak:

white

Optical Properties of Aravaipaite

Optical Data:

Biaxial (-), a=1.678, b=1.69, g=1.694, bire=0.0160, 2V(Calc)=58, 2V(Meas)=70. Dispersion r < v strong.

Pleochroism (x):

colorless.

Pleochroism (y):

colorless.

Pleochroism (z):

colorless.

Calculated Properties of Aravaipaite

Electron Density:

Bulk Density (Electron Density)=5.60 gm/cc
note: Specific Gravity of Aravaipaite =6.70 gm/cc.

Fermion Index:

Fermion Index = 0.16
Boson Index = 0.84

Photoelectric:

PE_Aravaipaite=1,363.39 barns/electron
U=PE_Aravaipaite x rElectron Density=7,634.24 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Aravaipaite is Not Radioactive

Aravaipaite Classification

Dana Class:

11.06.19.01 (11)Halide Complexes; Alumino-fluorides

(11.06)with miscellaneous formulae

(11.06.19)Dana Group

11.06.19.01 Aravaipaite Pb3AlF9•(H2O) P 2₁/m 2/m

Strunz Class:

03.DC.35 03 - HALIDES

03.D - Oxyhalides, Hydroxyhalides and Related Double Halides

03.DC -With Pb (As,Sb,Bi), without Cu

03.DC.35 Aravaipaite Pb3AlF9•(H2O) P 2₁/m 2/m

Other Aravaipaite Information

References:

NAME( Dana8) PHYS. PROP.(AmMin, v 86, p 927) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Aravaipaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Aravaipaite

Pb3AlF9•(H2O)
Dana No: 11.06.19.01 Strunz No: 03.DC.35
Locality:

Notes:

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