General Clinomimetite Information
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Chemical Formula: |
Pb5(AsO4)3Cl |
Composition: |
Molecular Weight = 1,488.21 gm |
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Arsenic 15.10 % As 23.17 % As2O5 |
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Lead 69.61 % Pb 74.99 % PbO |
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Chlorine 2.38 % Cl 2.38 % Cl |
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- % Cl -0.54 % -O=Cl2 |
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Oxygen 12.90 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Pb5(AsO4)3Cl |
IMA Status: |
Approved IMA 1991 |
Locality: |
Link to MinDat.org Location Data. |
Synonym: |
ICSD 69961 |
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IMA1990-043 |
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PDF 47-1808 |
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Clinomimetite Image |
Images:
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Clinomimetite Crystallography
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Axial Ratios: |
a:b:c =0.5001:1:0.366 |
Cell Dimensions: |
a = 10.1891, b = 20.3723, c = 7.4564, Z = 4; beta = 119.8827° V = 1,341.99 Den(Calc)= 7.37 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/b |
X Ray Diffraction: |
By Intensity(I/Io): 3.06(1), 3.01(0.95), 2.96(0.65), |
Crystal Structure:
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Yongshan D , Hughes J M , Moore P B , The Canadian Mineralogist , 29 (1991) p.369-376, The crystal structures of mimetite and clinomimetite, Pb5(AsO4)3Cl, Locality: Johanngeorgenstat, Erzgebirge, Sachsen, Germany
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Physical Properties of Clinomimetite
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Cleavage: |
None |
Color: |
Greenish yellow, White, Wax yellow. |
Density: |
7.36 |
Diaphaniety: |
Transparent to Translucent |
Hardness: |
3.5-4 - Copper Penny-Fluorite |
Luster: |
Subadamantine |
Streak: |
white |
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Optical Properties of Clinomimetite
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Gladstone-Dale: |
CI meas= -0.074 (Fair) - where the CI = (1-KPDmeas/KC) CI calc= -0.073 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1554,KPDmeas= 0.1556,KC= 0.1448 |
Optical Data: |
Biaxial (-), b=2.14-2.15, 2V(Meas)=8. |
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Calculated Properties of Clinomimetite
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Electron Density: |
relectron=6.16 gm/cc note: rClinomimetite =7.37 gm/cc. |
Fermion Index |
Fermion Index = 0.1539 Boson Index = 0.8461 |
Photoelectric: |
PEClinomimetite =1,290.30 barns/electron U=PEClinomimetite x relectron=7,949.00 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Clinomimetite is Not Radioactive |
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Clinomimetite Classification
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Dana Class: |
41.8.6.1 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen |
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(41.8)where (A)5 (XO4)3 Zq |
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(41.8.6)Dana Group |
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41.8.6.1 Clinomimetite Pb5(AsO4)3Cl P 21/b 2/m |
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41.8.6.2 IMA2004-006! (Ca,Na)5[(P,S)O4]3(OH,Cl) P 21/b 2/m |
Strunz Class: |
VII/B.39-165 VII - Phosphates, Arsenates and Vanadates |
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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 |
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VII/B.39 - Apatite - Pyromorphite group |
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VII/B.39-10 Fluorapatite Ca5(PO4)3F P 63/m 6/m |
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VII/B.39-20 Chlorapatite Ca5(PO4)3Cl P 63/m 6/m |
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VII/B.39-30 Hydroxylapatite Ca5(PO4)3(OH) P 63/m 6/m |
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VII/B.39-40 Carbonate-hydroxylapatite Ca5(PO4,CO3)3(OH) P 63/m 6/m |
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VII/B.39-50 Carbonate-fluorapatite Ca5(PO4,CO3)3F P 63/m 6/m |
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VII/B.39-60 Svabite Ca5(AsO4)3F P 63/m 6/m |
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VII/B.39-70 Turneaureite Ca5[(As,P)O4]3Cl P 63/m 6/m |
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VII/B.39-80 Johnbaumite Ca5(AsO4)3(OH) P 63/m,P 63 Hex |
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VII/B.39-90 Fermorite (Ca,Sr)5(AsO4,PO4)3(OH) P 63/m 6/m |
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VII/B.39-95 Fluorcaphite! (Ca,Sr,Ce,Na)5(PO4)3F P 63 6 |
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VII/B.39-100 Strontium-apatite (Sr,Ca)5(PO4)3(F,OH) P 63/m 6/m |
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VII/B.39-110 Belovite-(Ce) (Sr,Ce,Na,Ca)5(PO4)3(OH) P 3 3 |
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VII/B.39-115 Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3 |
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VII/B.39-117 Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3 |
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VII/B.39-120 Alforsite Ba5(PO4)3Cl P 63/m 6/m |
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VII/B.39-130 Morelandite (Ba,Ca,Pb)5(AsO4,PO4)3Cl P 63/m,P 63 Hex |
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VII/B.39-140 Hedyphane Ca2Pb3(AsO4)3Cl P 63/m 6/m |
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VII/B.39-150 Pyromorphite Pb5(PO4)3Cl P 63/m 6/m |
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VII/B.39-160 Mimetite Pb5(AsO4)3Cl P 63/m 6/m |
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VII/B.39-165 Clinomimetite Pb5(AsO4)3Cl P 21/b 2/m |
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VII/B.39-170 Vanadinite Pb5(VO4)3Cl P 63/m 6/m |
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Other Clinomimetite Information
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References: |
PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(37th List of New Min.,Min. Mag.,19) |
See Also: |
Links to other databases for Clinomimetite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 - EUROmin Project
4 -Google Images
5 -Google Scholar
6 -Handbook of Mineralogy (UofA)
7 -MinDAT
8 -MinMax(Deutsch)
9 -MinMax(English)
10 - Mineral and Gemstone Kingdom
11 -Mineralienatlas (Deutsch)
12 -QUT Mineral Atlas
13 - WWW-MINCRYST
14 -École des Mines de Paris
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Print or Cut-and-Paste your Clinomimetite Specimen Label here :
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Clinomimetite
Pb5(AsO4)3Cl
Dana No: 41.8.6.1 Strunz No: VII/B.39-165
Locality:
Notes:
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