Kampfite Mineral Data

Kampfite Mineral Data +

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General Kampfite Information

Chemical Formula:

Ba6[(Si,Al)O2]8(CO3)2Cl2(Cl,H2O)2

Composition:

Molecular Weight = 1,475.55 gm

Barium 53.98 % Ba 60.27 % BaO

Aluminum 4.39 % Al 8.29 % Al₂O₃

Silicon 9.90 % Si 21.17 % SiO₂

Hydrogen 0.14 % H 1.22 % H₂O

Carbon 1.63 % C 5.97 % CO₂

Chlorine 6.01 % Cl 6.01 % Cl

- % Cl -1.36 % -O=Cl₂

Oxygen 23.96 % O

______ ______

100.00 % 101.57 % = TOTAL OXIDE

Empirical Formula:

Ba_5.8Si_5.2Al_2.4O_15.1(CO₃)₂Cl_2.5·(H₂O)

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.

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:c = 1:5.6884

Cell Dimensions:

a = 5.244, c = 29.83, Z = 1; V = 710.41 Den(Calc)= 3.45

Crystal System:

HexagonalSpace Group: P 6₃mmc, P 6₂c, P 6₃mc, P 3₁

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

By Intensity(I/I_o): 3.883(1)(104), 14.67(1)(002), 2.616(0.7)(110),2.988(0.6)(0.0.10), 2.887(0.5)(108), 1.969(0.5)(1.1.10), 3.357(0.5)(106),

Physical Properties of Kampfite

Cleavage:

[0001] Good

Color:

Light blue gray.

Diaphaniety:

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= -0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1791,KC= 0.1741

Optical Data:

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

Calculated Properties of Kampfite

Electron Density:

r_electron=3.10 gm/cc
note: r_Kampfite=3.45 gm/cc.

Fermion Index

Fermion Index = 0.10111
Boson Index = 0.89889

Photoelectric:

PE_Kampfite= 242.09 barns/electron
U=PE_Kampfite x r_electron= 749.55 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kampfite is Not Radioactive

Kampfite Classification

Dana Class:

78.5.10.1 (78)Unclassified silicates

(78.5)possible phyllosilicates

(78.5.10)Dana Group

78.5.10.1 Kampfite ! Ba6[(Si,Al)O2]8(CO3)2Cl2(Cl,H2O)2 P 6₃mmc, P 6₂c, P 6₃mc, P 3₁ Hex

Strunz Class:

VIII/H.38-65 VIII - Silicates

VIII/H - Phyllosilicates (layered) Mica minerals with tetrahedral-double layers and related structures

VIII/H.38 - Monteregianite-(Y) - Wickenburgite series

VIII/H.38-10 Monteregianite-(Y) (Na,K)6(Y,Ca)2Si16O38·10(H2O) P 2₁/m 2/m

VIII/H.38-20 Rhodesite KHCa2Si8O19·5(H2O) Pmam 2/m 2/m 2/m

VIII/H.38-30 Delhayelite (Na,K)10Ca5Al6Si32O80(Cl2,F2,SO4)3·18(H2O) Pnmm 2/m 2/m 2/m

VIII/H.38-40 Hydrodelhayelite KCa2AlSi7O17(OH)2·6(H2O) Pnm21 mm2

VIII/H.38-50 Macdonaldite BaCa4[Si16O36(OH)2]·10(H2O) C mcm 2/m 2/m 2/m

VIII/H.38-60 Cymrite BaAl2Si2O8·(H2O) P 2₁ (pseudo-HEX) 2

VIII/H.38-65 Kampfite Ba6[(Si,Al)O2]8(CO3)2Cl2(Cl,H2O)2 P 6₃mmc, P 6₂c, P 6₃mc, P 3₁ Hex

VIII/H.38-80 Lourenswalsite (K,Ba)2(Ti,Mg,Ca,Fe)4(Si,Al,Fe)6O14(OH)12 Unk (pseudo-HEX) Hex

VIII/H.38-90 Wickenburgite Pb3CaAl2Si10O27·4(H2O) P 3₁c 3m

Other Kampfite Information

References:

NAME( MinRec, Vol 33, p 163) PHYS. PROP.(MinRec, Vol 33, p 163) OPTIC PROP.(MinRec, Vol 33, p 163)

See Also:

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

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

Kampfite

Ba6[(Si,Al)O2]8(CO3)2Cl2(Cl,H2O)2
Dana No: 78.5.10.1 Strunz No: VIII/H.38-65
Locality:

Notes: