Kampfite Mineral Data

General Kampfite Information

Chemical Formula:

Ba12(Si11Al5)O31(CO3)8Cl5

Composition:

Molecular Weight = 3,266.13 gm

Barium 50.96 % Ba 56.90 % BaO

Sodium 0.04 % Na 0.06 % Na₂O

Strontium 0.08 % Sr 0.10 % SrO

Titanium 0.07 % Ti 0.12 % TiO₂

Aluminum 4.28 % Al 8.09 % Al₂O₃

Silicon 9.26 % Si 19.81 % SiO₂

Carbon 2.94 % C 10.78 % CO₂

Chlorine 5.35 % Cl 5.35 % Cl

- % Cl -1.21 % -O=Cl₂

Oxygen 27.01 % O

______ ______

100.00 % 99.99 % = TOTAL OXIDE

Empirical Formula:

Ba_12.12Na_0.06Sr_0.03Si_10.77Al_5.18Ti_0.05C₈O_55.14Cl_4.93

Environment:

In a quartz-sanbornite outcrop. Cymrite-like; structure

IMA Status:

Approved IMA 2000 (Dana # Added)

Locality:

Esquire #1 claim, Rush Creek, eastern Fresno County, California, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Anthony Robert Kampf (1948-), Curator and Section Head of Minerals, Los Angeles County Museum, in recognition of his many contributions in the study of new minerals.

Name Pronunciation:

Kampfite

Synonym:

IMA2000-003

Kampfite Image

Images:

Kampfite

Comments: Light, bluish-gray crystalline kampfite.
Location: Esquire #1 Claim, Rush Creek, Fresno Co., California, USA. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Images:

Kampfite

Comments: Anthony Kampf, Curator and Section Head of the Mineral Sciences Section at the Los Angeles County Museum of Natural History and the person whom kampfite was named for, kindly provided the pronunciation of the mineral kampfite.
Location: Tucson Convention Center, 50th Tucson Gem and Mineral Show, February 12, 2004. Scale: NA.
© Dave Barthelmy

Kampfite Crystallography

Axial Ratios:

a:b:c =5.9607:1:1.736

Cell Dimensions:

a = 31.2329, b = 5.2398, c = 9.0966, Z = 1; beta = 106.933° V = 1,424.16 Den(Calc)= 3.81

Crystal System:

Monoclinic - DomaticH-M Symbol (m) Space Group: Cc

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.879(1), 2.621(0.63), 14.883(0.46),3.355(0.31), 2.883(0.27), 1.97(0.21), 2.173(0.2), 4.348(0.18),

Crystal Structure:

Mouse
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Basciano L C , Groat L A , The Canadian Mineralogist , 45 (2007) p.935-943, The crystal structure of kampfite, Locality: Esquire #1 claim, Rush Creek, Fresno County, California

Physical Properties of Kampfite

Cleavage:

{0001} Good

Color:

Light blue gray.

Diaphaneity:

Translucent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.

Hardness:

3 - Calcite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Kampfite

Gladstone-Dale:

CI calc= 0.052 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1622,KC= 0.1712
Ncalc = 1.65

Optical Data:

Uniaxial (-), e=1.594, w=1.642, bire=0.0480.

Calculated Properties of Kampfite

Electron Density:

Bulk Density (Electron Density)=3.44 gm/cc
note: Specific Gravity of Kampfite =3.81 gm/cc.

Fermion Index:

Fermion Index = 0.09
Boson Index = 0.91

Photoelectric:

PE_Kampfite= 227.55 barns/electron
U=PE_Kampfite x rElectron Density= 781.83 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kampfite is Not Radioactive

Kampfite Classification

Dana Class:

78.05.10.01 (78)Unclassified silicates

(78.05)possible phyllosilicates

(78.05.10)Dana Group

78.05.10.01 Kampfite! Ba12(Si11Al5)O31(CO3)8Cl5 Cc m

Strunz Class:

09.EG.20 09 - SILICATES (Germanates)

09.E - Phyllosilicates

09.EG -Double nets with 6-membered and larger rings

09.EG.20 Kampfite! Ba12(Si11Al5)O31(CO3)8Cl5 Cc m

Other Kampfite Information

References:

NAME( MinRec, Vol 33, p 163) PHYS. PROP.(MinRec, v33, p163, AmMin, v93:705) OPTIC PROP.(MinRec, Vol 33, p 163)

See Also:

Links to other databases for Kampfite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Ask about Kampfite here :
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Mindat.org's Discussion Groups
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Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Kampfite

Ba12(Si11Al5)O31(CO3)8Cl5
Dana No: 78.05.10.01 Strunz No: 09.EG.20
Locality:

Notes: