Huntite Mineral Data

Huntite Mineral Data
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General Huntite Information

Help on Chemical Formula: Chemical Formula: CaMg3(CO3)4
Help on Composition: Composition: Molecular Weight = 353.03 gm
   Calcium    11.35 %  Ca   15.88 % CaO
   Magnesium  20.65 %  Mg   34.25 % MgO
   Carbon     13.61 %  C    49.87 % CO2
   Oxygen     54.38 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaMg3(CO3)4
Help on Environment: Environment: Vugs and coating fractures in rock; as flowstone and incrustations in caves; typically precipitated by evaporative concentration of meteoric solutions weathering magnesite- or dolom ite-bearing rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1955
Help on Locality: Locality: Ala-Mar deposit, Currant Creek district, and the Gabbs mine, Gabbs district, Nye Co., Nevada, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Walter Frederick Hunt (1882-1975), University of Michigan, Ann Arbor, Michigan, USA.
Help on Name Pronunciation: Name Pronunciation: Huntite Say HUNTITE
Help on Synonym: Synonym: ICSD 201729
  PDF 14-409
 

Huntite Image

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Huntite

Comments: pure white chalky massive huntite.
Location: Near Austin, Lander County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Huntite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.82305
Help on Cell Dimensions: Cell Dimensions: a = 9.5027, c = 7.8212, Z = 3; V = 611.64 Den(Calc)= 2.88
Help on Crystal System: Crystal System: Trigonal - TrapezohedralH-M Symbol (3 2) Space Group: R 32
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.833(1), 1.972(0.3), 2.888(0.2),
Click Here for Large Huntite Structure Window Crystal Structure:

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Dollase W A , Reeder R J , American Mineralogist , 71 (1986) p.163-166, Crystal structure refinement of huntite, CaMg3(CO3)4, with X-ray powder data

 

Physical Properties of Huntite

Help on Cleavage: Cleavage: None
Help on Color: Color: White, Lemon white.
Help on Density: Density: 2.696
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Hardness: Hardness: 1-2 - Between Talc and Gypsum
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: white
 

Optical Properties of Huntite

Help on Optical Data: Optical Data: NCalc= 1.6 - from Gladstone-Dale relationship (KC = 0.2071) where Ncalc=Dcalc*KC+1
NCalc= 1.56 - from Gladstone-Dale relationship (KC = 0.2071) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Huntite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.87 gm/cc
note: Specific Gravity of Huntite =2.88 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEHuntite = 2.03 barns/electron
U=PEHuntite x rElectron Density= 5.83 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Huntite is Not Radioactive
 

Huntite Classification
Help on Dana Class: Dana Class: 14.04.03.01 (14)Anhydrous Carbonates
  (14.04)with Compound Formula A+2 B++2 (CO3)4
  (14.04.03)Dana Group
 
14.04.03.01 Huntite CaMg3(CO3)4 R 32 3 2
Help on Strunz Class: Strunz Class: 05.AB.25 05 - CARBONATES (NITRATES)
  05.A - Carbonates without additional anions, without H2O
  05.AB -Alkali-earth (and other M2+) carbonates
 
05.AB.25 Huntite CaMg3(CO3)4 R 32 3 2
 

Other Huntite Information
Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Huntite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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

Huntite

CaMg3(CO3)4
Dana No: 14.04.03.01 Strunz No: 05.AB.25
Locality:

 

Notes: