Collinsite Mineral Data + Say COLLINSITE

General Collinsite Information

Help on Chemical  Formula: Chemical Formula: Ca2(Mg,Fe++)(PO4)2·2(H2O)
Help on Composition: Composition: Molecular Weight = 338.32 gm
   Calcium     23.69 %  Ca   33.15 % CaO
   Magnesium    5.39 %  Mg    8.93 % MgO
   Iron         4.13 %  Fe    5.31 % FeO
   Phosphorus  18.31 %  P    41.96 % P2O5
   Hydrogen     1.19 %  H    10.65 % H2O
   Oxygen      47.29 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Mg0.75Fe2+0.25(PO4)2·2(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1927
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Synonym: Synonym: ICSD 4258
  PDF 26-1063
 

Collinsite Image

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Collinsite

Comments: Half nodule of nearly pure collinsite. The center of the specimen is a small piece of volcanic rock surrounded by collinsite.
Location: Francois Lake, British Columbia, Canada. Scale: 7 x 5.5 cm.
© John Veevaert

Collinsite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8457:1:0.8025
Help on Cell Dimensions: Cell Dimensions: a = 5.734, b = 6.78, c = 5.441, Z = 1; alpha = 97.29°, beta = 108.56°, gamma = 107.28° V = 189.93 Den(Calc)= 2.96
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.04(1), 2.682(0.9), 2.713(0.8),
Click Here for Large Collinsite Structure Window Crystal Structure:

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Help on Above


Brotherton P D , Maslen E N , Pryce M W , White A H , Australian Journal of Chemistry , 27 (1974) p.653-656, Crystal structure of collinsite

 

Physical Properties of Collinsite

Help on Cleavage: Cleavage: [001] Perfect, [010] Perfect
Help on Color: Color: Colorless, White, Light brown.
Help on Density: Density: 2.95
Help on Diaphaniety: Diaphaniety: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 3-3.5 - Calcite-Copper Penny
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Silky
Help on Streak: Streak: white
 

Optical Properties of Collinsite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.037 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.033 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2175,KPDmeas= 0.2182,KC= 0.2105
Help on Optical Data: Optical Data: Biaxial (+), a=1.632, b=1.642, g=1.657, bire=0.0250
 

Calculated Properties of Collinsite

Help on Electron Density: Electron Density:

relectron=2.97 gm/cc
note: rCollinsite =2.96 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00681
Boson Index = 0.99319
Help on Photoelectric: Photoelectric:

PECollinsite = 5.11 barns/electron
U=PECollinsite x relectron= 15.15 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Collinsite is Not Radioactive

 

Collinsite Classification

Help on  Dana Class: Dana Class: 40.2.2.3 (40)Hydrated Phosphates, etc
  (40.2)where A++ (B++)2 (XO4) · x(H2O)
  (40.2.2)Fairfieldite Subgroup (Triclinic: P1¯)
 
40.2.2.1 Fairfieldite Ca2(Mn,Fe)(PO4)2·2(H2O) P1 1
 
40.2.2.2 Messelite Ca2(Fe,Mn)(PO4)2·2(H2O) P1 1
 
40.2.2.3 Collinsite Ca2(Mg,Fe)(PO4)2·2(H2O) P1 1
 
40.2.2.4 Cassidyite Ca2(Ni,Mg)(PO4)2·2(H2O) P1 1
 
40.2.2.5 Talmessite Ca2Mg(AsO4)2·2(H2O) P1 1
 
40.2.2.6 Gaitite Ca2Zn(AsO4)2·2(H2O) P1 1
 
40.2.2.7 Roselite-beta Ca2(Co,Mg)(AsO4)2·2(H2O) P 1 or P1 Tri
 
40.2.2.8 Parabrandtite Ca2Mn(AsO4)·2(H2O) P1,P 1 Tri
 
40.2.2.9 Hillite! Ca2(Zn,Mg)[PO4]2·2(H2O) P1 1
Help on  Strunz Class: Strunz Class: VII/C.17-10 VII - Phosphates, Arsenates and Vanadates
  VII/C - Water-bearing phosphates without unfamiliar anions, cations of medium and big size: Fe, Mn, Zn, Mg and Ca, (NH4)1+
  VII/C.17 - Collinsite - Wendwilsonite series
 
VII/C.17-10 Collinsite Ca2(Mg,Fe)(PO4)2·2(H2O) P1 1
 
VII/C.17-15 Hillite! Ca2(Zn,Mg)[PO4]2·2(H2O) P1 1
 
VII/C.17-20 Messelite Ca2(Fe,Mn)(PO4)2·2(H2O) P1 1
 
VII/C.17-30 Fairfieldite Ca2(Mn,Fe)(PO4)2·2(H2O) P1 1
 
VII/C.17-40 Cassidyite Ca2(Ni,Mg)(PO4)2·2(H2O) P1 1
 
VII/C.17-50 Talmessite Ca2Mg(AsO4)2·2(H2O) P1 1
 
VII/C.17-60 Gaitite Ca2Zn(AsO4)2·2(H2O) P1 1
 
VII/C.17-70 Parabrandtite Ca2Mn(AsO4)·2(H2O) P1,P 1 Tri
 
VII/C.17-80 Roselite-beta Ca2(Co,Mg)(AsO4)2·2(H2O) P 1 or P1 Tri
 
VII/C.17-90 Wendwilsonite Ca2(Mg,Co)(AsO4)2·2(H2O) P 21/c 2/m
 
VII/C.17-100 Roselite Ca2(Co,Mg)(AsO4)2·2(H2O) P 21/c 2/m
 
VII/C.17-110 Brandtite Ca2(Mn,Mg)(AsO4)2·2(H2O) P 21/c 2/m
 
VII/C.17-120 Zincroselite Ca2Zn(AsO4)2·2(H2O) P 21/c 2/m
 

Other Collinsite Information

Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Collinsite :
1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 -Athena 4 - Crocoite.com Mineral Locations 5 - EUROmin Project 6 -Google Images 7 -Google Scholar 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 - WWW-MINCRYST 15 -École des Mines de Paris

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

Collinsite

Ca2(Mg,Fe++)(PO4)2·2(H2O)
Dana No: 40.2.2.3 Strunz No: VII/C.17-10
Locality:

 

Notes:

 

 
   
 
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