Rajite Mineral Data

Rajite Mineral Data +

General Rajite Information

Chemical Formula:

CuTe++++2O5

Composition:

Molecular Weight = 398.74 gm

Copper 15.94 % Cu 19.95 % CuO

Tellurium 64.00 % Te 80.05 % TeO₂

Oxygen 20.06 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CuTe₂O₅

Environment:

Rhyolite.

IMA Status:

Approved IMA 1979

Locality:

Lone Pine, Catron County, New Mexico. Link to MinDat.org Location Data.

Name Origin:

Named after Robert Allen Jenkins (RAJ-ite), a mineralogist who first recognized the species.

Synonym:

ICSD 2542

PDF 33-494

Rajite Image

Images:

Rajite

Comments: Bluish green coating of rajite on matrix.
Location: Lone Pine mine, Catron Co., New Mexico, USA. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Rajite Crystallography

Axial Ratios:

a:b:c =0.7371:1:0.8157

Cell Dimensions:

a = 6.866, b = 9.314, c = 7.598, Z = 4; beta = 109.1° V = 459.14 Den(Calc)= 5.77

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 3.064(1), 3.348(0.8), 4.654(0.8),

Physical Properties of Rajite

Cleavage:

[010] Indistinct, [001] Indistinct

Color:

Green.

Density:

5.75

Habit:

Crystalline - Fine - Occurs as well-formed fine sized crystals.

Hardness:

4 - Fluorite

Optical Properties of Rajite

Gladstone-Dale:

CI meas= -0.044 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.041 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2028,KPDmeas= 0.2035,KC= 0.1948

Optical Data:

Biaxial (+), a=2.115, b=2.135, g=2.26, bire=0.1450, 2V(Calc)=46, 2V(Meas)=40.

Calculated Properties of Rajite

Electron Density:

r_electron=5.01 gm/cc
note: r_Rajite=5.77 gm/cc.

Fermion Index

Fermion Index = 0.05123
Boson Index = 0.94877

Photoelectric:

PE_Rajite= 234.04 barns/electron
U=PE_Rajite x r_electron=1,171.76 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Rajite is Not Radioactive

Rajite Classification

Dana Class:

34.4.2.1 (34)Selenites - Tellurites - Sulfites

(34.4)Dana Type

(34.4.2)Dana Group

34.4.2.1 Rajite CuTe2O5 P 2₁/c 2/m

Strunz Class:

IV/K.12-10 IV - Oxides

IV/K - Tellurides with [Te2O5]2- groups

IV/K.12 - Rayite - Mackayite series

IV/K.12-10 Rajite CuTe2O5 P 2₁/c 2/m

IV/K.12-20 Denningite (Mn,Zn)Te2O5 P 4₁/nbc 4/m 2/m 2/m

IV/K.12-30 Mackayite FeTe2O5(OH) I 4₁/acd 4/m 2/m 2/m

Other Rajite Information

References:

NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Rajite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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

Rajite

CuTe++++2O5
Dana No: 34.4.2.1 Strunz No: IV/K.12-10
Locality:

Notes: