Carlosruizite Mineral Data

Carlosruizite Mineral Data

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General Carlosruizite Information

Chemical Formula:

K6(Na,K)4Na6Mg10(Se++++++O4)12(IO3)12·12(H2O)

Composition:

Molecular Weight = 4,754.15 gm

Potassium 5.76 % K 6.93 % K₂O

Sodium 4.35 % Na 5.87 % Na₂O

Magnesium 5.11 % Mg 8.48 % MgO

Hydrogen 0.51 % H 4.55 % H₂O

Selenium 19.93 % Se 32.05 % SeO₃

Iodine 32.03 % I 42.13 % I₂O₅

Oxygen 32.31 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

K₇Na₉Mg₁₀(SeO₄)₁₂(IO₃)₁₂·12(H₂O)

Environment:

In samples of iquiqueite leached from caliche amarillo (yellow nitrate ore). Forms a series with fuenzalidaite.

IMA Status:

Approved IMA 1994

Locality:

Probably in the vicinity of Zapiga, Chile. Link to MinDat.org Location Data.

Name Origin:

For Carlos Ruiz F. (1916- ), who planned and directed the first national geological institution of Chile.

Synonym:

ICSD 77417

IMA1993-020

PDF 47-1852

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Carlosruizite Crystallography

Axial Ratios:

a:c = 1:2.87379

Cell Dimensions:

a = 9.5901, c = 27.56, Z = 1; V = 2,195.11 Den(Calc)= 3.60

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: P 3c1

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

By Intensity(I/I_o): 3.561(1), 2.715(0.39), 3.058(0.39),

Crystal Structure:

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Konnert J A , Evans H T , McGee J J , Ericksen G E , American Mineralogist , 79 (1994) p.1003-1008, Mineralogical studies of the nitrate deposits of Chile: VII. Two saline, minerals with the composition K6(Na,K)4Na6Mg10(XO4)12(IO3)12.12H2O:, Fuenzalidaite (X=S) and carlosruizite (X=Se)

Physical Properties of Carlosruizite

Cleavage:

[110] Good

Color:

Colorless, Pale yellow.

Density:

3.42

Diaphaniety:

Transparent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Carlosruizite

Gladstone-Dale:

CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.061 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1801,KPDmeas= 0.1896,KC= 0.1919

Optical Data:

Uniaxial (-), e=1.642, w=1.655, bire=0.0130.

Calculated Properties of Carlosruizite

Electron Density:

r_electron=3.15 gm/cc
note: r_{Carlosruizite}=3.42 gm/cc.

Fermion Index

Fermion Index = 0.02042
Boson Index = 0.97958

Photoelectric:

PE_{Carlosruizite}= 133.29 barns/electron
U=PE_{Carlosruizite} x r_electron= 419.58 barns/cc.

Radioactivity:

GRapi = 76.44 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Carlosruizite - barely detectable

Carlosruizite Classification

Dana Class:

23.1.2.2 (23)Compound Iodates

(23.1)with miscellaneous formulae

(23.1.2)Dana Group

23.1.2.1 Fuenzalidaite K6(Na,K)4Na6Mg10(SO4)12(IO3)12·12(H2O) P 3c1 3 2/m

23.1.2.2 Carlosruizite K6(Na,K)4Na6Mg10(SeO4)12(IO3)12·12(H2O) P 3c1 3 2/m

23.1.2.3 Georgeericksenite! Na6CaMg(IO3)6(CrO4)2·12(H2O) C 2/c 2/m

Strunz Class:

VI/D.16-60 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium and very big size

VI/D.16 - Darapskite - Humberstonite series

VI/D.16-10 Darapskite Na3(SO4)(NO3)·(H2O) P 2₁/m 2/m

VI/D.16-20 Ungemachite K3Na8Fe(SO4)6(NO3)2·6(H2O) R 3 3

VI/D.16-30 Clinoungemachite K3Na9Fe(SO4)6(OH)3·9(H2O)? (pseudo-HEX-R) Mono

VI/D.16-40 Humberstonite K3Na7Mg2(SO4)6(NO3)2·6(H2O) R 3 3

VI/D.16-50 Fuenzalidaite K6(Na,K)4Na6Mg10(SO4)12(IO3)12·12(H2O) P 3c1 3 2/m

VI/D.16-60 Carlosruizite K6(Na,K)4Na6Mg10(SeO4)12(IO3)12·12(H2O) P 3c1 3 2/m

VI/D.16-70 Georgeericksenite! Na6CaMg(IO3)6(CrO4)2·12(H2O) C 2/c 2/m

Other Carlosruizite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.79,p1003-1008,1994) OPTIC PROP.(MinRec)

See Also:

Links to other databases for Carlosruizite :
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 - WWW-MINCRYST

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

Carlosruizite

K6(Na,K)4Na6Mg10(Se++++++O4)12(IO3)12·12(H2O)
Dana No: 23.1.2.2 Strunz No: VI/D.16-60
Locality:

Notes: