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Cámaraite

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Fernando Cámara
Formula:
Ba3NaFe82+Ti4(Si2O7)4O4(OH)4F3
System:
Triclinic
Colour:
Orange-red to ...
Lustre:
Vitreous
Name:
Named by E. Sokolova, Y. Abdu, F.C. Hawthorne, A.V. Stepanov, B.K. Bekenova, P.E. Kotel'nikov in 2009 in honor of Fernando Cámara (24 May 1967, Melilla, Spain - ) mineralogist, crystallographer, and professor at the University of Milan. He has a special interest in Ti-silicate minerals, amphiboles, and arrojadite- and cancrinite-group minerals.
Closely related to jinshajiangite and bafertisite.


Classification of Cámaraite

Approved
Approval Year:
2009
First Published:
2009

Physical Properties of Cámaraite

Vitreous
Diaphaneity (Transparency):
Translucent
Colour:
Orange-red to brownish-red
Comment:
Paler than bafertisite
Streak:
Pale yellow
Comment:
<5 (less than bafertisite)
Tenacity:
Brittle
Cleavage:
Perfect
{001}
Parting:
None observed
Density:
3.871 g/cm3 (Measured)    4.018 g/cm3 (Calculated)
Comment:
Measured is less than calculated because of intergrowths

Optical Data of Cámaraite

Type:
Biaxial (+)
Pleochroism:
Strong
Comments:
X = light brown, Y = reddish-brown, Z = yellow-brown, with Z < X < Y

Chemical Properties of Cámaraite

IMA Formula:
Ba3NaFe82+Ti4(Si2O7)4O4(OH)4F3
Elements listed in formula:

Crystallography of Cámaraite

Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Cell Parameters:
a = 10.6965(7) Å, b = 21.478(2) Å, c = 21.478(2) Å
α = 99.345(1)°, β = 92.315(2)°, γ = 89.993(2)°
Ratio:
a:b:c = 0.498 : 1 : 1
Unit Cell Volume:
V 4,864.78 ų (Calculated from Unit Cell)
Twinning:
None observed
Comment:
Non-standard space group C-1.
X-Ray Powder Diffraction Data:
d-spacingIntensity
3.825 (30)
3.394 (50)
3.182 (50)
2.869 (40)
2.788 (90)
2.629 (100)
2.101 (50)
1.721 (70)

Type Occurrence of Cámaraite

General Appearance of Type Material:
Platey crystals to 15x8mm and star-shaped aggregates of crystals with different
orientations, on fracture surfaces as intergrowths with jinshajiangite and bafertisite.
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Moscow, Russia (catalog no. 3828/1 and 3
828/2).
Associated Minerals at Type Locality:

Other Names for Cámaraite

Name in Other Languages:

Other Information

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

References for Cámaraite

Reference List:
Williams, P.A., Hatert, F., Pasero, M. (2009) New minerals approved in 2009. in International Mineralogical Association, 1-34.

Sokolova, E., Abdu, Y., Hawthorne, F.C., Stepanov, A.V., Bekenova, G.K., Kotel'nikov, P.E. (2009) Cámaraite, Ba3NaTi4(Fe2+,Mn)8(Si2O7)4O4(OH,F)7. I. A new Ti-silicate mineral from the Verkhnee Espe Deposit, Akjailyautas Mountains, Kazakhstan. Mineralogical Magazine: 73: 847-854.

Cámara, F., Sokolova, E., Nieto, F. (2009) Cámaraite, Ba3NaTi4(Fe2+,Mn)8(Si2O7)4O4(OH,F)7. II. The crystal structure and crystal chemistry of a new group-II Ti-disilicate mineral. Mineralogical Magazine: 73: 855-870.

Piilonen, P.C., Poirier, G. (2010) New mineral names. American Mineralogist: 95: 1357-1361.

Internet Links for Cámaraite

mindat.org URL:
https://www.mindat.org/min-39451.html
Please feel free to link to this page.

Localities for Cámaraite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Kazakhstan (TL)
 
  • Eastern Kazakhstan Province (Shyghys Qazaqstan Oblysy; Vostochno-Kazakhstanskaya Oblast')
    • Tarbagatai Range
      • Akzhaylyautas Mts (Akzhailyautas Mts; Akjaylautas Mts; Akzhalautas Mts)
IMA Approvals - May 2009 Sokolova, E., Y. Abdu, F.C. Hawthorne, A.V. Stepanov, G.K. Bekenova, and P.E. Kotel’nikov (2009) Cámaraite, Ba3NaTi4(Fe2+,Mn)8(Si2O7)4O4(OH,F)7. I. A new Ti-silicate mineral from the Verkhnee Espe Deposit, Akjailyautas Mountains, Kazakhstan. Mineralogical Magazine, 73, 847–854.
Mineral and/or Locality  
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