Pyromorphite Mineral Data

General Pyromorphite Information

Chemical Formula:

Pb5(PO4)3Cl

Composition:

Molecular Weight = 1,356.37 gm

Phosphorus 6.85 % P 15.70 % P₂O₅

Lead 76.38 % Pb 82.28 % PbO

Chlorine 2.61 % Cl 2.61 % Cl

- % Cl -0.59 % -O=Cl₂

Oxygen 14.15 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Pb₅(PO₄)₃Cl

Environment:

Secondary mineral found in the oxidized zones of lead ore deposits

IMA Status:

Valid Species (Pre-IMA) 1813

Locality:

Link to MinDat.org Location Data.

Name Origin:

From the Greek pyr - "fire" and morfe - "form" in allusion the recrystallization reaction of the molten mineral.

Name Pronunciation:

Pyromorphite + Pronunciation

Synonym:

Campylite

Green lead ore

ICSD 203075

PDF 19-701

Phosphomimetite

Pyromorphite Image

Images:

Pyromorphite

Comments: Apple green pyromorphite.
Location: San Andres Mine, Villaviciosa, Cordoba, Spain. Scale: 6.5 x 5 cm.
© Fabre Minerals

Pyromorphite Crystallography

Axial Ratios:

a:c = 1:0.73299

Cell Dimensions:

a = 10, c = 7.33, Z = 2; V = 634.80 Den(Calc)= 7.10

Crystal System:

Hexagonal - Dipyramidal H-M Symbol (6/m) Space Group: P 6₃/m

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

By Intensity(I/I_o): 2.957(1), 2.99(0.8), 2.065(0.7),

Physical Properties of Pyromorphite

Cleavage:

{1011} Imperfect

Color:

Green, Yellow, Brown, Grayish white, Yellowish red.

Density:

6.7 - 7, Average = 6.85

Diaphaneity:

Subtransparent to subtranslucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Globular - Spherical, or nearly so, rounded forms (e.g. wavellite).

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Reniform - "Kidney like" in shape (e.g.. hematite).

Hardness:

3.5-4 - Copper Penny-Fluorite

Luminescence:

Fluorescent, Long UV=yellow.

Luster:

Adamantine - Resinous

Streak:

white

Optical Properties of Pyromorphite

Gladstone-Dale:

CI meas= -0.051 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1485,KPDmeas= 0.1539,KC= 0.1464
Ncalc = 1.98 - 2.04

Optical Data:

Uniaxial (-), e=2.049, w=2.059, bire=0.0100.

Calculated Properties of Pyromorphite

Electron Density:

Bulk Density (Electron Density)=5.95 gm/cc
note: Specific Gravity of Pyromorphite =7.10 gm/cc.

Fermion Index:

Fermion Index = 0.16
Boson Index = 0.84

Photoelectric:

PE_Pyromorphite=1,400.54 barns/electron
U=PE_Pyromorphite x rElectron Density=8,328.29 barns/cc.

Radioactivity:

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

Pyromorphite Classification

Dana Class:

41.08.04.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.08)where (A)5 (XO4)3 Zq

(41.08.04)Pyromorphite Group

41.08.04.01 Pyromorphite Pb5(PO4)3Cl P 6₃/m 6/m

41.08.04.02 Mimetite Pb5(AsO4)3Cl P 6₃/m 6/m

41.08.04.03 Vanadinite Pb5(VO4)3Cl P 6₃/m 6/m

41.08.04.04 Hydroxylpyromorphite! Pb5(PO4)3OH P 6₃/m 6/m

Strunz Class:

08.BN.05 08 - PHOSPHATES, ARSENATES, VANADATES

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BN -With only large cations, (OH, etc.):RO4 = 0.33:1

08.BN.05 Alforsite Ba5(PO4)3Cl P 6₃/m 6/m

08.BN.05 Apatite* Ca5(PO4)3(OH,F,Cl) P 6₃/m 6/m

08.BN.05 Belovite-(Ce) (Sr,Ce,Na,Ca)5(PO4)3(OH) P 3 3

08.BN.05 Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3

08.BN.05 Fermorite (Ca,Sr)5(AsO4,PO4)3(OH) P 6₃/m 6/m

08.BN.05 Deloneite-(Ce)! NaCa2SrCe(PO4)3F P 3 3

08.BN.05 Johnbaumite Ca5(AsO4)3(OH) P 6₃/m,P 6₃ Hex

08.BN.05 Apatite-(CaOH) Ca5(PO4)3(OH) P 6₃/m 6/m

08.BN.05 Apatite-(CaCl) Ca5(PO4)3Cl P 6₃/m 6/m

08.BN.05 Carbonate-fluorapatite? Ca5(PO4,CO3)3F P 6₃/m 6/m

08.BN.05 Carbonate-hydroxylapatite? Ca5(PO4,CO3)3(OH) P 6₃/m 6/m

08.BN.05 Clinomimetite Pb5(AsO4)3Cl P 2₁/b 2/m

08.BN.05 Apatite-(CaF) Ca5(PO4)3F P 6₃/m 6/m

08.BN.05 Fluorcaphite! (Ca,Sr,Ce,Na)5(PO4)3F P 6₃ 6

08.BN.05 Hedyphane Ca2Pb3(AsO4)3Cl P 6₃/m 6/m

08.BN.05 Mimetite Pb5(AsO4)3Cl P 6₃/m 6/m

08.BN.05 Apatite-(SrOH) (Sr,Ca)5(PO4)3(F,OH) P 6₃/m 6/m

08.BN.05 Morelandite (Ba,Ca,Pb)5(AsO4,PO4)3Cl P 6₃/m,P 6₃ Hex

08.BN.05 Pyromorphite Pb5(PO4)3Cl P 6₃/m 6/m

08.BN.05 Vanadinite Pb5(VO4)3Cl P 6₃/m 6/m

08.BN.05 Apatite-(CaOH)-M! (Ca,Na)5[(P,S)O4]3(OH,Cl) P 2₁/b 2/m

08.BN.05 IMA2008-068! Ca2Pb3(PO4)3F P 6₃/m 6/m

08.BN.05 Svabite Ca5(AsO4)3F P 6₃/m 6/m

08.BN.05 Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3

08.BN.05 Turneaureite Ca5[(As,P)O4]3Cl P 6₃/m 6/m

08.BN.05 Phosphohedyphane! Ca2Pb3(PO4)3Cl P 6₃/m 6/m

08.BN.05 IMA2008-009! Sr5(PO4)3F P 6₃/m 6/m 2/m 2/m

08.BN.05 Hydroxylpyromorphite! Pb5(PO4)3OH P 6₃/m 6/m

Other Pyromorphite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Collectors Book of Fluorescent Minerals) OPTIC PROP.(Mason68)

See Also:

Links to other databases for Pyromorphite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Glendale Community College
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - HyperPhysics
13 - MinDAT
14 - Mineral and Gemstone Kingdom
15 - Mineralienatlas (Deutsch)
16 - Online Mineral Museum
17 - Philatelic Mineralogy
18 - QUT Mineral Atlas
19 - Ruff.Info
20 - WWW-MINCRYST
21 - YupRocks
22 - theimage

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

Pyromorphite

Pb5(PO4)3Cl
Dana No: 41.08.04.01 Strunz No: 08.BN.05
Locality:

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