Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (8 online) Mindat Auctions

Traskite

Big Photo

Esquire No. 1 claim, Rush Creek, Fresno Co., California, USA
© Caltech

Show Traskite Photos (3)
Formula:
Ba
 
9
Fe
 
2
Ti
 
2
Si
 
12
O
 
36
(OH,Cl,F)
 
6
·6H
 
2
O
System:HexagonalColour:Red-brown
Hardness:5
Name:Named after John Boardman Trask (1824-1879), state geologist of California.
This page provides mineralogical data about Traskite.

Classification of Traskite

IMA status:Approved 1964
Strunz 8th edition ID:8/E.20-20
Nickel-Strunz 10th (pending) edition ID:9.CP.05

9 : SILICATES (Germanates)
C : Cyclosilicates
P : 12-membered and larger rings
Dana 8th edition ID:64.5.1.1

64 : CYCLOSILICATES Rings with Other Anions and Insular Silicate Groups
5 : Rings with Other Anions and Insular Silicate Groups: 12-membered rings with [Si2O7] dimers
Hey's CIM Ref.:17.3.17

17 : Silicates Containing other Anions
3 : Silicates with chloride (including aluminosilicates)
mindat.org URL:http://www.mindat.org/min-4007.html
Please feel free to link to this page.

Type Occurrence of Traskite

Type Locality:Esquire No. 1 claim, Rush Creek, Fresno Co., California, USA
Year of Discovery:1965

Physical Properties of Traskite

Lustre:Vitreous
Colour:Red-brown
Streak:light red-brown
Hardness (Mohs):5

Crystallography of Traskite

Crystal System:Hexagonal
Cell Parameters:a = 17.89Å, c = 12.33Å
Ratio:a:c = 1 : 0.689
Unit Cell Volume:V 3,417.55 ų (Calculated from Unit Cell)

Optical Data of Traskite

Type:Uniaxial (-)
RI values: nω = 1.714 nε = 1.702
Maximum Birefringence:δ = 0.012

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

Chemical Properties of Traskite

Formula:
Ba
 
9
Fe
 
2
Ti
 
2
Si
 
12
O
 
36
(OH,Cl,F)
 
6
·6H
 
2
O
Essential elements:Ba, Fe, H, O, Si, Ti
All elements listed in formula:Ba, Cl, F, Fe, H, O, Si, Ti
Common Impurities:Al,Mn,Mg,Ca,Sr,K

Relationship of Traskite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.CP.10Megacyclite
Na
 
8
KSi
 
9
O
 
18
(OH)
 
9
·19H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
17.3.1Rustumite
Ca
 
10
(Si
 
2
O
 
7
)
 
2
(SiO
 
4
)Cl
 
2
(OH)
 
2
17.3.2Zunyite
Al
 
13
Si
 
5
O
 
20
(OH,F)
 
18
Cl
17.3.3Sodalite
Na
 
8
[Cl
 
2
|Al
 
6
Si
 
6
O
 
24
]
17.3.4Marialite
Na
 
4
[Cl|(AlSi
 
3
O
 
8
)
 
3
]
17.3.5Tugtupite
Na
 
4
[Cl|BeAlSi
 
4
O
 
12
]
17.3.6Eudialyte
Na
 
15
Ca
 
6
(Fe
2+
 
,Mn
2+
 
)
 
3
Zr
 
3
[Si
 
25
O
 
73
](O,OH,H
 
2
O)
 
3
(OH,Cl)
 
2
17.3.7Alluaivite
Na
 
19
(Ca,Mn)
 
6
(Ti,Nb)
 
3
Si
 
26
O
 
74
Cl·2H
 
2
O
17.3.8Nasonite
Pb
 
6
Ca
 
4
[Cl
 
2
|(Si
 
2
O
 
7
)
 
3
]
17.3.9Asisite
Pb
 
7
[O
 
4
|SiO
 
4
|Cl
 
2
]
17.3.10Jagoite
(Pb,Ca)
 
3
FeSi
 
3
O
 
10
(Cl,OH)
17.3.11Friedelite
(Mn,Fe)
 
8
Si
 
6
O
 
15
(OH,Cl)
 
10
17.3.12Pyrosmalite-(Fe)
(Fe,Mn)
 
8
Si
 
6
O
 
15
(OH,Cl)
 
10
17.3.13Pyrosmalite
(Fe,Mn)
 
8
Si
 
16
O
 
15
(OH,Cl)
 
10
17.3.14Pyrosmalite-(Mn)
(Mn,Fe)
 
8
Si
 
6
O
 
15
(OH,Cl)
 
10
17.3.16Mcgillite
(Mn,Fe)
 
8
Si
 
6
O
 
15
(OH)
 
8
Cl
 
2
17.3.18Muirite
Ba
 
10
Ca
 
2
Mn
2+
 
Ti[(OH,Cl,F)|HSi
 
2
O
 
7
]
 
5
17.3.19Verplanckite
Ba
 
2
(Mn,Fe,Ti)Si
 
2
O
 
6
(O,OH,Cl,F)
 
2
·3H
 
2
O or near

Other Names for Traskite

Synonyms:
IMA1964-014
Other Languages:
German:Traskit
Russian:Траскит
Spanish:Traskita

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 Traskite

Reference List:Alfors, J.T., M.C. Stinson, R.A. Matthews & A. Pabst (1965), Seven new barium minerals from eastern Fresno County, California: American Mineralogist: 50: 314-340.

Alfors, J.T. & G.W. Putnam (1965), Revised chemical analyses of traskite, verplanckite and muirite from Fresno County, California: American Mineralogist: 50: 1500-1503.

Soviet Physics – Doklady (1976): 426.

Articles/Blogs about Traskite

Internet Links for Traskite

Search Engines:
  • Look for Traskite on Google
  • Look for Traskite images on Google
    • External Links:
  • Look for Traskite on Webmineral
  • Look for Traskite on Athena Mineralogy
  • Look for Traskite on Wikipedia
  • Look for Traskite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Traskite in the Natural History Museum (London) online catalogue
  • Traskite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Fabre Minerals - search for Traskite specimens
  • Top quality minerals from Kristalle of California
  • Buy minerals from Mineralium.com
  • rare and unusual minerals mainly crystallized
  • Wendel Minerals - Auktion & Shop
  • Search for Traskite on minvision.com
  • High-end worldwide specimens & outstanding customer service
  • Wright's Rock Shop - excellent mineral specimens since 1970
  • Rare and Unusual minerals at Mineralogical Research Company
  • The Arkenstone - Fine Minerals
  • Buy Minerals and Crystals from Crystalarium.com
  • Buy from David K Joyce minerals
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Traskite

    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.
    These maps work faster with Firefox!
    (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.
    Slovakia
     
    • Košice Region
      • Southern Slanské Mts
    		Koděra, P., Rojkovičová, Ľ.,Košárková, M., 1998: Mineralógická správa lokality Byšta, Au-Ag. Manuscript, Archiv Geofond, Bratislava, 68 p
    USA
     
    • California
      • Fresno Co.
        • Big Creek
        • Rush Creek
    		[MinRec 33:163]
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.