Perite Mineral Data

Perite Mineral Data +

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General Perite Information

Chemical Formula:

PbBiO2Cl

Composition:

Molecular Weight = 483.63 gm

Bismuth 43.21 % Bi 48.17 % Bi₂O₃

Lead 42.84 % Pb 46.15 % PbO

Chlorine 7.33 % Cl 7.33 % Cl

- % Cl -1.65 % -O=Cl₂

Oxygen 6.62 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

PbBiO₂Cl

IMA Status:

Approved IMA 1960

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 31860

PDF 13-352

Perite Image

Images:

Perite

Comments: Pale yellow scaly crystalline perite on quartz.
Location: Benson, Cochise County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Perite Crystallography

Axial Ratios:

a:b:c =1.0093:1:2.2286

Cell Dimensions:

a = 5.627, b = 5.575, c = 12.425, Z = 4; V = 389.78 Den(Calc)= 8.24

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Bmmb

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

By Intensity(I/I_o): 2.86(1), 1.62(0.9), 3.77(0.8),

Physical Properties of Perite

Cleavage:

[???] Good

Color:

Brownish yellow, Yellow, Sulfur yellow.

Density:

8.16

Diaphaniety:

Translucent

Hardness:

3 - Calcite

Luster:

Adamantine

Streak:

yellow

Optical Properties of Perite

Gladstone-Dale:

CI meas= -0.045 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.035 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1638,KPDmeas= 0.1654,KC= 0.1582

Optical Data:

Biaxial (+), b=2.35

Calculated Properties of Perite

Electron Density:

r_electron=6.75 gm/cc
note: r_Perite=8.24 gm/cc.

Fermion Index

Fermion Index = 0.09471
Boson Index = 0.90529

Photoelectric:

PE_Perite=1,653.05 barns/electron
U=PE_Perite x r_electron=11153.05 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Perite is Not Radioactive

Perite Classification

Dana Class:

10.2.5.1 (10)Oxyhalides and Hydroxyhalides

(10.2)where A (O,OH) Xq

(10.2.5)Dana Group

10.2.5.1 Perite PbBiO2Cl Bmmb 2/m 2/m 2/m

10.2.5.2 Nadorite PbSbO2Cl Bmmb 2/m 2/m 2/m

Strunz Class:

III/D.11-90 III - Halogenides

III/D - Oxi-halogenides with Pb - Bi - Sb and related compounds

III/D.11 - Mendipite - Onoratoite series

III/D.11-10 Mendipite Pb3Cl2O2 P 2₁2₁2₁ 2 2 2

III/D.11-15 Damaraite Pb3O2(OH)Cl Pmc2 mm2

III/D.11-17 Chubutite* Pb7O6Cl2 Unk Ortho

III/D.11-20 Penfieldite Pb2Cl3(OH) P 6/mmm 6/m 2/m 2/m

III/D.11-30 Blixite Pb2Cl(O,OH)2 Unk Ortho

III/D.11-35 Mereheadite! Pb2O(OH)Cl C 2/c 2/m

III/D.11-40 Sundiusite Pb10(SO4)Cl2O8 C 2,Cm,C 2/m Mono

III/D.11-50 Asisite Pb12(SiO4)O8Cl4 I 4/mmm 4/m 2/m 2/m

III/D.11-55 Parkinsonite (Pb,Mo,[])8O8Cl2 I 4/mmm 4/m 2/m 2/m

III/D.11-60 Thorikosite Pb3(Sb,As)O3(OH)Cl2 I 4/mmm 4/m 2/m 2/m

III/D.11-65 Philolithite! Pb12O6Mn(Mg,Mn)2(Mn,Mg)4(SO4)(CO3)4Cl4(OH)12 P 4₁/nnm 4/m 2/m 2/m

III/D.11-70 Pinalite Pb3(WO4)OCl2 Amam 2/m 2/m 2/m

III/D.11-80 Nadorite PbSbO2Cl Bmmb 2/m 2/m 2/m

III/D.11-90 Perite PbBiO2Cl Bmmb 2/m 2/m 2/m

III/D.11-100 Heliophyllite Pb6As2O7Cl4 Unk Ortho

III/D.11-110 Ecdemite Pb6As2O7Cl4 Unk Tetra

III/D.11-120 Onoratoite Sb8O11Cl2 C 2/m 2/m

Other Perite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

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

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Print or Cut-and-Paste your Perite Specimen Label here :

Perite

PbBiO2Cl
Dana No: 10.2.5.1 Strunz No: III/D.11-90
Locality:

Notes: