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Kampfite

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Esquire No. 1 claim, Rush Creek, Rush Creek deposit, Big Creek-Rush Creek District, Fresno Co., California, USA
© Thomas Witzke

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Formula:
Ba
 
12
(Si
 
11
Al
 
5
)O
 
31
(CO
 
3
)
 
8
Cl
 
5
System:MonoclinicColour:Light blue-grey
Lustre:VitreousHardness:3
Name:For Dr Anthony Robert Kampf


Part of the Monteregianite-(Y)-Wickenburgite Series.

Classification of Kampfite

IMA status:Approved 2000
Strunz 8th edition ID:8/H.38-65
Nickel-Strunz 10th (pending) edition ID:9.EG.20

9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings
Dana 7th edition ID:78.5.10.1
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Type Occurrence of Kampfite

Type Locality:Esquire No. 1 claim, Rush Creek, Rush Creek deposit, Big Creek-Rush Creek District, Fresno Co., California, USA
Geological Setting of type material:In a quartz-sanbornite outcrop.
Associated Minerals at type locality:
SanborniteQuartz

Physical Properties of Kampfite

Lustre:Vitreous
Diaphaneity (Transparency):Translucent
Colour:Light blue-grey
Streak:White
Hardness (Mohs):3
Cleavage:Distinct/Good
{001} well developed
Fracture:Irregular/Uneven
Density (calculated):3.45 g/cm3

Crystallography of Kampfite

Crystal System:Monoclinic
Class (H-M):m - Domatic
Cell Parameters:a = 31.2329(7) Å, b = 5.2398(1) Å, c = 9.0966(3) Å
β = 106.933(2)°
Ratio:a:b:c = 5.961 : 1 : 1.736
Unit Cell Volume:V 1424.2 ų
Z:1
Comment:Space group Cc; strongly pseudohexagonal (pseudo-P63/mmc, a = 5.244, c = 29.83 A).
X-Ray Powder Diffraction:
d-spacingIntensity
3.883 (100)
14.67 (100)
2.616 (70)
2.988 (60)
2.887 (50)
1.969 (50)

Optical Data of Kampfite

Type:Uniaxial (-)
RI values: nω = 1.642 nε = 1.594
Maximum Birefringence:δ = 0.048

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate

Chemical Properties of Kampfite

Formula:
Ba
 
12
(Si
 
11
Al
 
5
)O
 
31
(CO
 
3
)
 
8
Cl
 
5
Essential elements:Al, Ba, C, Cl, O, Si
All elements listed in formula:Al, Ba, C, Cl, O, Si

Relationship of Kampfite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.EG.05Cymrite
BaAl
 
2
Si
 
2
(O,OH)
 
8
·H
 
2
O
9.EG.10Naujakasite
(Na,K)
 
6
(Fe
2+
 
,Mn
2+
 
,Ca)(Al,Fe)
 
4
Si
 
8
O
 
26
9.EG.10Manganonaujakasite
Na
 
6
(Mn
2+
 
,Fe
2+
 
)Al
 
4
Si
 
8
O
 
26
9.EG.15Dmisteinbergite
Ca[Al
 
2
Si
 
2
O
 
8
]
9.EG.25Strätlingite
Ca
 
2
Al
 
2
SiO
 
7
·8H
 
2
O
9.EG.25Vertumnite
Ca
 
4
Al
 
4
Si
 
4
O
 
6
(OH)
 
24
·3H
 
2
O
9.EG.30Eggletonite
(Na,K,Ca)
 
2
(Mn,Fe)
 
8
(Si,Al)
 
12
O
 
29
(OH)
 
7
·11H
 
2
O
9.EG.30Ganophyllite
(K,Na,Ca)
 
2
Mn
 
8
(Si,Al)
 
12
(O,OH)
 
32
·8H
 
2
O
9.EG.30Tamaite
(Ca,K,Ba,Na)
 
3-4
Mn
 
24
(Si,Al)
 
40
(O,OH)
 
112
·21H
 
2
O
9.EG.35Coombsite
K(Mn,Fe,Mg)
 
13
(Si,Al)
 
18
O
 
42
(OH)
 
14
9.EG.35Zussmanite
K(Fe,Mg,Mn)
 
13
(Si,Al)
 
18
O
 
42
(OH)
 
14
9.EG.40Franklinphilite
(K,Na)
 
4
(Mn,Zn,Mg,Fe)
 
48
(Si,Al)
 
72
(O,OH)
 
216
·6H
 
2
O
9.EG.40Lennilenapeite
K
 
6-7
(Mg,Mn,Fe,Zn)
 
48
(Si,Al)
 
72
(O,OH)
 
216
·16H
 
2
O
9.EG.40Parsettensite
K
 
1.2
Mn
 
8
(Si,Al)
 
12
O
 
26
(OH)
 
10
9.EG.40Stilpnomelane
(K,Ca,Na)(Fe
2+
 
,Mg,Al,Fe
3+
 
)
 
8
(Si,Al)
 
12
(O,OH)
 
36
 · nH
 
2
O
9.EG.45Latiumite
K
 
2
Ca
 
6
(Si,Al)
 
11
O
 
25
(SO
 
4
,CO
 
3
)
9.EG.45Tuscanite
(K(Ca,Na)
 
6
(Si,Al)
 
10
O
 
22
[SO
 
4
,CO
 
3
,(OH)
 
2
]·H
 
2
O
9.EG.50Jagoite
(Pb,Ca)
 
3
FeSi
 
3
O
 
10
(Cl,OH)
9.EG.55Wickenburgite
CaPb
 
3
Al
 
2
Si
 
10
O
 
24
(OH)
 
6
9.EG.60Hyttsjöite
Pb
 
18
Ba
 
2
Ca
 
5
Mn
2+
2
Fe
3+
2
Si
 
30
O
 
90
Cl·6H
 
2
O
9.EG.65Armbrusterite
K
 
5
Na
 
7
Mn
 
15
[(OH)
 
10
|(Si
 
9
O
 
22
)
 
4
] · 4H
 
2
O
9.EG.70Britvinite
[Pb
 
7
(OH)
 
3
F(BO
 
3
)
 
2
(CO
 
3
)][Mg
 
4.5
(OH)
 
3
(Si
 
5
O
 
14
)]
9.EG.75Bannisterite
Ca
 
0.5
(K,Na)
 
0.5
(Mn,Fe,Zn)
 
10
(Si,Al)
 
16
O
 
38
(OH)
 
8
·5.5H
 
2
O

Other Names for Kampfite

Synonyms:
IMA2000-003
Other Languages:
German:Kampfit
Spanish:Kampfita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Kampfite

Reference List:Canadian Mineralogist (2001): 1053-1058.

Mineralogical Record (2002): 33: 163.

Basciano, L.C. & Groat, L.A. (2007): The crystal structure of kampfite. Canadian Mineralogist, 45, 935-943.

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    Localities for Kampfite

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    USA
     
    • California
      • Fresno Co.
        • Big Creek-Rush Creek District
          • Rush Creek deposit
            • Big Creek
    		No reference listed
            • Rush Creek
    		Mineralogical Record (2002): 33: 163.
    Mineral and/or Locality
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