Caresite Mineral Data (original) (raw)

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

Click Here for Larger Caresite Image in a New Browser Window Images:

Click Here for Larger Caresite Image Caresite Comments: Tabular brownish-yellow crystals of caresite in matrix. Location: Poudrette quarry, Mt Saint-Hilaire, Rouville Co., Québec, 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 - TrapezohedralH-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),

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

Caresite

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

Notes: