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Caresite Mineral Data

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General Caresite Information

Help on Chemical  Formula: Chemical Formula: Fe++4Al2(OH)12CO3•3(H2O)
Help on Composition: Composition: Molecular Weight = 595.49 gm
   Aluminum   9.06 %  Al   17.12 % Al2O3
   Iron      37.51 %  Fe   48.26 % FeO
   Hydrogen   3.05 %  H    27.23 % H2O
   Carbon     2.02 %  C     7.39 % CO2
   Oxygen    48.36 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+4Al2(CO3)(OH)12•3(H2O)
Help on Environment: Environment: In silicate and carbonate cavities and in nepheline syenite pegmatites.
Help on IMA Status: IMA Status: Approved IMA 1997
Help on Locality: Locality: Poudrette quarry, Mont Saint-Hilaire, Rouville County, Quebec, as well as in the Corporation quarry, Montreal, Quebec, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Steve Cares (1909-) and Janet Cares (1921-) of Sudbury, MA, Canada, who found the mineral.
Help on Synonym: Synonym: IMA1992-030
 

Caresite Image

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  Caresite

Comments: Tabular brownish-yellow crystals of caresite in matrix.
Location: Poudrette quarry, Mt Saint-Hilaire, Rouville Co., Qu├ębec, Canada. Scale: Picture size 2.5 mm.
© Thomas Witzke / Abraxas-Verlag

Caresite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.08051
Help on Cell Dimensions: Cell Dimensions: a = 10.805, c = 22.48, Z = 6; V = 2,272.88 Den(Calc)= 2.61
Help on Crystal System: Crystal System: Trigonal - Trapezohedral H-M Symbol (3 2) Space Group: P 3112 or P 3212
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.49(1), 3.746(0.5), 2.625(0.4),
Help on Forms: Forms:

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Help on Above

Forms: ( 1 1 0) ( 0 0 1)

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Physical Properties of Caresite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Colorless, Yellow, Orange brown.
Help on Density: Density: 2.57 - 2.59, Average = 2.58
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Caresite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.033 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.044 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2239,KPDmeas= 0.2266,KC= 0.2343
Ncalc = 1.6 - 1.61
Help on Optical Data: Optical Data: Uniaxial (-), e=1.57, w=1.599, bire=0.0290.
 

Calculated Properties of Caresite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.58 gm/cc
note: Specific Gravity of Caresite =2.58 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0084113378
Boson Index = 0.9915886622
Help on Photoelectric: Photoelectric: PECaresite = 11.27 barns/electron
U=PECaresite x rElectron Density= 29.11 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Caresite is Not Radioactive
 

Caresite Classification

Help on  Dana Class: Dana Class: 16b.06.04.03 (16b)Carbonates - Hydroxyl or Halogen
  (16b.06)Dana Type
  (16b.06.04)Quintinite - Charmarite Group
 
16b.06.04.01 Quintinite-2H Mg4Al2(OH)12CO3•4(H2O) P 6322 6 2 2
 
16b.06.04.02 Quintinite-3T Mg4Al2(OH)12CO3•4(H2O) P 3112,P 3212 3 2
 
16b.06.04.03 Caresite Fe4Al2(OH)12CO3•3(H2O) P 3112 or P 3212 3 2
 
16b.06.04.04 Charmarite-2H Mn4Al2(CO3)(OH)12•3(H2O) P 6322 6 2 2
 
16b.06.04.05 Charmarite-3T Mn4Al2(CO3)(OH)12•3(H2O) P 3112 3 2
Help on  Strunz Class: Strunz Class: 05.DA.40 05 - CARBONATES (NITRATES)
  05.D - Carbonates with Additional Anions, with H2O
  05.DA -With medium-sized cations
 
05.DA.40 Charmarite-3T Mn4Al2(CO3)(OH)12•3(H2O) P 3112 3 2
 
05.DA.40 Charmarite-2H Mn4Al2(CO3)(OH)12•3(H2O) P 6322 6 2 2
 
05.DA.40 Caresite Fe4Al2(OH)12CO3•3(H2O) P 3112 or P 3212 3 2
 
05.DA.40 Quintinite-2H Mg4Al2(OH)12CO3•4(H2O) P 6322 6 2 2
 
05.DA.40 Quintinite-3T Mg4Al2(OH)12CO3•4(H2O) P 3112,P 3212 3 2
 

Other Caresite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.83,p1347,1998) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Caresite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Caresite

Fe++4Al2(OH)12CO3•3(H2O)
Dana No: 16b.06.04.03 Strunz No: 05.DA.40
Locality:

 

Notes:

 

 
   
 


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