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 = 4,438.69 gm

Potassium 5.46 % K 6.58 % K₂O

Sodium 3.47 % Na 4.68 % Na₂O

Magnesium 5.48 % Mg 9.08 % MgO

Chromium 1.29 % Cr 2.48 % CrO₃

Hydrogen 0.54 % H 4.87 % H₂O

Selenium 11.74 % Se 18.88 % SeO₃

Sulfur 3.11 % S 7.76 % SO₃

Iodine 34.31 % I 45.12 % I₂O₅

Oxygen 34.60 % O

______ ______

100.00 % 99.44 % = TOTAL OXIDE

Empirical Formula:

K_6.2Na_6.7Mg₁₀(SeO₄)_6.6(SO₄)_4.3(CrO₄)_1.1(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

Carlosruizite Image

Images:

Carlosruizite

Comments: Trigonal crystal of carlosruizite. (AmMin, v79:1003).
Location: Platy crystals in samples of iquiqueite obtained by leaching caliche amarillo (yellow nitrate ore) from samples in the Iquique office of the former Servicio de Minas del Estado of Chile. Scale: Scale Bar 10 µm.
© American Mineralogist

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)= 3.36

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:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

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

Diaphaneity:

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= 0.04 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.023 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.193,KPDmeas= 0.1896,KC= 0.1975
Ncalc = 1.66 - 1.68

Optical Data:

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

Calculated Properties of Carlosruizite

Electron Density:

Bulk Density (Electron Density)=3.12 gm/cc
note: Specific Gravity of Carlosruizite =3.36 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Carlosruizite}= 134.75 barns/electron
U=PE_{Carlosruizite} x r_electron= 420.07 barns/cc.

Radioactivity:

GRapi = 73.12 (Gamma Ray American Petroleum Institute Units)
Concentration of Carlosruizite per GRapi unit = 1.37 (%)

Estimated Radioactivity from Carlosruizite - barely detectable

Carlosruizite Classification

Dana Class:

23.01.02.02 (23)Compound Iodates

(23.01)with miscellaneous formulae

(23.01.02)Fuenzalidaite Group

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

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

23.01.02.03 George-ericksenite! Na6CaMg(IO3)6(CrO4)2•12(H2O) C 2/c 2/m

Strunz Class:

07.DG.40 07 - SULFATES (SELENATES, TELLURATES)

07.D - Sulfates (selenates, etc.) with additional anions, with H2O

07.DG -With large and medium sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3

07.DG.40 Carlosruizite K6(Na,K)4Na6Mg10(SeO4)12(IO3)12•12(H2O) P 3c1 3 2/m

07.DG.40 Fuenzalidaite K6(Na,K)4Na6Mg10(SO4)12(IO3)12•12(H2O) P 3c1 3 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 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - 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: 23.01.02.02 Strunz No: 07.DG.40
Locality:

Notes: