Mineralogy Database

Butschliite Mineral Data

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General Butschliite Information

Help on Chemical  Formula: Chemical Formula: K2Ca(CO3)2
Help on Composition: Composition: Molecular Weight = 238.29 gm
   Potassium  32.82 %  K    39.53 % K2O
   Calcium    16.82 %  Ca   23.53 % CaO
   Carbon     10.08 %  C    36.94 % CO2
   Oxygen     40.29 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K2Ca(CO3)2
Help on Environment: Environment: Occurs in the clinkers of melted wood ash found in partly burned trees, mainly hemlock and fir, in the forests of the western United States. Dimorphous with fairchildite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1947
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Johann Adam Otto Butschli (1848-1920), professor of zoology, Heidelberg, Germany, who studied the double carbonates of K and Ca.
Help on Name Pronunciation: Name Pronunciation: Butschliite + Pronunciation Say BUTSCHLIITE
Help on Synonym: Synonym: Buetschliite

Butschliite Image

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Comments: Slightly fibrous to granular massive butschliite.
Location: Near Shavings Lake, Renfrew County, Ontario, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Butschliite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:3.38289
Help on Cell Dimensions: Cell Dimensions: a = 5.38, c = 18.2, Z = 3; V = 456.21 Den(Calc)= 2.60
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.86(1), 3.02(0.3), 1.044(0.2),1.614(0.2), 1.69(0.2), 0.933(0.2), 2.07(0.1), 2.69(0.1),

Physical Properties of Butschliite

Help on Cleavage: Cleavage: {0001} Distinct
Help on Color: Color: White.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.

Optical Properties of Butschliite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.024 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2,KC= 0.2048
Ncalc = 1.53
Help on Optical Data: Optical Data: Uniaxial (?), a=1.445, b=1.595, bire=0.1500.

Calculated Properties of Butschliite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.57 gm/cc
note: Specific Gravity of Butschliite =2.60 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0015686955
Boson Index = 0.9984313045
Help on Photoelectric: Photoelectric: PEButschliite = 5.47 barns/electron
U=PEButschliite x relectron= 14.10 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 468.92 (Gamma Ray American Petroleum Institute Units)
Concentration of Butschliite per GRapi unit = 0.21 (%)

Estimated Radioactivity from Butschliite - barely detectable


Butschliite Classification

Help on  Dana Class: Dana Class: (14)Anhydrous Carbonates
  (14.03)with Compound Formula A+2 B++ (CO3)2
  (14.03.01)Dana Group Butschliite K2Ca(CO3)2 R 3m 3 2/m
Help on  Strunz Class: Strunz Class: 05.AC.15 05 - CARBONATES (NITRATES)
  05.A - Carbonates without additional anions, without H2O
  05.AC -Alkali and alkali-earth carbonates
05.AC.15 Butschliite K2Ca(CO3)2 R 3m 3 2/m

Other Butschliite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Butschliite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
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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Dana No: Strunz No: 05.AC.15





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