Pyromorphite Mineral Data

Pyromorphite Mineral Data +

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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.

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 - DipyramidalH-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),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
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Dai Y S , Hughes J M , The Canadian Mineralogist , 27 (1989) p.189-192, Crystal-structure refinements of vanadinite and pyromorphite

Physical Properties of Pyromorphite

Cleavage:

[1011] Imperfect

Color:

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

Density:

6.7 - 7, Average = 6.85

Diaphaniety:

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:

None.

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

Optical Data:

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

Calculated Properties of Pyromorphite

Electron Density:

r_electron=5.95 gm/cc
note: r_Pyromorphite=7.10 gm/cc.

Fermion Index

Fermion Index = 0.16886
Boson Index = 0.83114

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Pyromorphite is Not Radioactive

Pyromorphite Classification

Dana Class:

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

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

(41.8.4)Dana Group

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

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

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

Strunz Class:

VII/B.39-150 VII - Phosphates, Arsenates and Vanadates

VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of medium and big size: Mg, Cu, Zn, and Ca, Na, K, Ba, Pb

VII/B.39 - Apatite - Pyromorphite group

VII/B.39-10 Fluorapatite Ca5(PO4)3F P 6₃/m 6/m

VII/B.39-20 Chlorapatite Ca5(PO4)3Cl P 6₃/m 6/m

VII/B.39-30 Hydroxylapatite Ca5(PO4)3(OH) P 6₃/m 6/m

VII/B.39-40 Carbonate-hydroxylapatite Ca5(PO4,CO3)3(OH) P 6₃/m 6/m

VII/B.39-50 Carbonate-fluorapatite Ca5(PO4,CO3)3F P 6₃/m 6/m

VII/B.39-60 Svabite Ca5(AsO4)3F P 6₃/m 6/m

VII/B.39-70 Turneaureite Ca5[(As,P)O4]3Cl P 6₃/m 6/m

VII/B.39-80 Johnbaumite Ca5(AsO4)3(OH) P 6₃/m,P 6₃ Hex

VII/B.39-90 Fermorite (Ca,Sr)5(AsO4,PO4)3(OH) P 6₃/m 6/m

VII/B.39-95 Fluorcaphite! (Ca,Sr,Ce,Na)5(PO4)3F P 6₃ 6

VII/B.39-100 Strontium-apatite (Sr,Ca)5(PO4)3(F,OH) P 6₃/m 6/m

VII/B.39-110 Belovite-(Ce) (Sr,Ce,Na,Ca)5(PO4)3(OH) P 3 3

VII/B.39-115 Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3

VII/B.39-117 Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3

VII/B.39-120 Alforsite Ba5(PO4)3Cl P 6₃/m 6/m

VII/B.39-130 Morelandite (Ba,Ca,Pb)5(AsO4,PO4)3Cl P 6₃/m,P 6₃ Hex

VII/B.39-140 Hedyphane Ca2Pb3(AsO4)3Cl P 6₃/m 6/m

VII/B.39-150 Pyromorphite Pb5(PO4)3Cl P 6₃/m 6/m

VII/B.39-160 Mimetite Pb5(AsO4)3Cl P 6₃/m 6/m

VII/B.39-165 Clinomimetite Pb5(AsO4)3Cl P 2₁/b 2/m

VII/B.39-170 Vanadinite Pb5(VO4)3Cl P 6₃/m 6/m

Other Pyromorphite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) 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 - Glendale Community College
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - HyperPhysics
12 - MinDAT
13 - MinMax(Deutsch)
14 - MinMax(English)
15 - Mineral and Gemstone Kingdom
16 - Mineralienatlas (Deutsch)
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: 41.8.4.1 Strunz No: VII/B.39-150
Locality:

Notes: