Pyromorphite Mineral Data

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.

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
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

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)

Search for Pyromorphite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Pyromorphite :
AA Mineral Specimens
A-Rocks Auction
Adams Minerals
B and L Minerals
Dakota Matrix
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Minernet.it
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Pyromorphite Mineral Data :

Ask about Pyromorphite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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: