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Carlosruizite Mineral Data

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General Carlosruizite Information

Help on Chemical  Formula: Chemical Formula: K6(Na,K)4Na6Mg10(Se++++++O4)12(IO3)12•12(H2O)
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: K6.2Na6.7Mg10(SeO4)6.6(SO4)4.3(CrO4)1.1(IO3)12�12(H2O)
Help on Environment: Environment: In samples of iquiqueite leached from caliche amarillo (yellow nitrate ore). Forms a series with fuenzalidaite.
Help on IMA Status: IMA Status: Approved IMA 1994
Help on Locality: Locality: Probably in the vicinity of Zapiga, Chile. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Carlos Ruiz F. (1916- ), who planned and directed the first national geological institution of Chile.
Help on Synonym: Synonym: ICSD 77417
  PDF 47-1852

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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

Help on Axial Ratios: Axial Ratios: a:c = 1:2.87379
Help on Cell Dimensions: Cell Dimensions: a = 9.5901, c = 27.56, Z = 1; V = 2,195.11 Den(Calc)= 3.36
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: P 3c1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.561(1), 2.715(0.39), 3.058(0.39),

Physical Properties of Carlosruizite

Help on Cleavage: Cleavage: {110} Good
Help on Color: Color: Colorless, Pale yellow.
Help on Density: Density: 3.42
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Carlosruizite

Help on Gladstone-Dale: 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
Help on Optical Data: Optical Data: Uniaxial (-), e=1.642, w=1.655, bire=0.0130.

Calculated Properties of Carlosruizite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.12 gm/cc
note: Specific Gravity of Carlosruizite =3.36 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PECarlosruizite = 134.75 barns/electron
U=PECarlosruizite x relectron= 420.07 barns/cc.
Help on Radioactivity: 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

Help on  Dana Class: Dana Class: (23)Compound Iodates
  (23.01)with miscellaneous formulae
  (23.01.02)Fuenzalidaite Group Fuenzalidaite K6(Na,K)4Na6Mg10(SO4)12(IO3)12•12(H2O) P 3c1 3 2/m Carlosruizite K6(Na,K)4Na6Mg10(SeO4)12(IO3)12•12(H2O) P 3c1 3 2/m George-ericksenite! Na6CaMg(IO3)6(CrO4)2•12(H2O) C 2/c 2/m
Help on  Strunz Class: 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

Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.79,p1003-1008,1994) OPTIC PROP.(MinRec)
Help on See Also: 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

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Dana No: Strunz No: 07.DG.40





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