Carlosruizite Mineral Data
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 % K2 O
Sodium 3.47 % Na 4.68 % Na2 O
Magnesium 5.48 % Mg 9.08 % MgO
Chromium 1.29 % Cr 2.48 % CrO3
Hydrogen 0.54 % H 4.87 % H2 O
Selenium 11.74 % Se 18.88 % SeO3
Sulfur 3.11 % S 7.76 % SO3
Iodine 34.31 % I 45.12 % I2 O5
Oxygen 34.60 % O
______ ______
100.00 % 99.44 % = TOTAL OXIDE
Empirical Formula:
K6.2 Na6.7 Mg10 (SeO4 )6.6 (SO4 )4.3 (CrO4 )1.1 (IO3 )12 �12(H2 O)
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 Scalenohedral H-M Symbol (3 2/m) Space Group: P 3 c1
X Ray Diffraction:
By Intensity(I/Io ): 3.561(1), 2.715(0.39), 3.058(0.39),
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:
PECarlosruizite = 134.75 barns/electronU=PECarlosruizite 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 3 c1 3 2/m
23.01.02.02 Carlosruizite K6(Na,K)4Na6Mg10(SeO4)12(IO3)12•12(H2O) P 3 c1 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 3 c1 3 2/m
07.DG.40 Fuenzalidaite K6(Na,K)4Na6Mg10(SO4)12(IO3)12•12(H2O) P 3 c1 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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Carlosruizite
K6(Na,K)4Na6Mg10(Se++++++O4)12(IO3)12•12(H2O)
Dana No: 23.01.02.02 Strunz No: 07.DG.40
Locality:
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