Iquiqueite Mineral Data + Say IQUIQUEITE

General Iquiqueite Information

Help on Chemical  Formula: Chemical Formula: K3Na4Mg(Cr++++++O4)B24O39(OH)·12(H2O)
Help on Composition: Composition: Molecular Weight = 1,466.16 gm
   Potassium   8.00 %  K     9.64 % K2O
   Sodium      6.27 %  Na    8.45 % Na2O
   Magnesium   1.66 %  Mg    2.75 % MgO
   Chromium    3.55 %  Cr    6.82 % CrO3
   Boron      17.70 %  B    56.98 % B2O3
   Hydrogen    1.72 %  H    15.36 % H2O
   Oxygen     61.11 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K3Na4Mg(CrO4)B24O39(OH)·12(H2O)
Help on Environment: Environment: Generally disseminated in nitratine ore.
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Iquique, Tarapaca Province, Chile. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality
 

Iquiqueite Image

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Iquiqueite   Nitratine

Comments: Yellow iquiqueiite in clear, massive nitration.
Location: Salar de Miraje, Antofagasta, Chile. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Iquiqueite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.59158
Help on Cell Dimensions: Cell Dimensions: a = 11.6369, c = 30.158, Z = 3; V = 3,536.78 Den(Calc)= 2.06
Help on Crystal System: Crystal System: Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: P 31c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.856(1), 3.02(1), 10.11(0.85),
 

Physical Properties of Iquiqueite

Help on Cleavage: Cleavage: [0001] Perfect, [0110] Indistinct
Help on Color: Color: Yellow.
Help on Density: Density: 2.05
Help on Diaphaniety: Diaphaniety: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: yellow white
 

Optical Properties of Iquiqueite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.028 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2303,KPDmeas= 0.2315,KC= 0.238
Help on Optical Data: Optical Data: Uniaxial (-), e=1.447, w=1.502, bire=0.0550.
 

Calculated Properties of Iquiqueite

Help on Electron Density: Electron Density:

relectron=2.04 gm/cc
note: rIquiqueite =2.05 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.04054
Boson Index = 0.95946
Help on Photoelectric: Photoelectric:

PEIquiqueite = 1.95 barns/electron
U=PEIquiqueite x relectron= 3.98 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 114.94 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Iquiqueite - barely detectable

 

Iquiqueite Classification

Help on  Dana Class: Dana Class: 27.1.8.1 (27)Compound Borates
  (27.1)Dana Type
  (27.1.8)Dana Group
 
27.1.8.1 Iquiqueite K3Na4Mg(CrO4)B24O39(OH)·12(H2O) P 31c 3m
Help on  Strunz Class: Strunz Class: VI/F.03-10 VI - Sulfates,Chromates,Molybdates and Tungstates
  VI/F - Chromates [CrO4]2-
  VI/F.03 - Iquiquieite
 
VI/F.03-10 Iquiqueite K3Na4Mg(CrO4)B24O39(OH)·12(H2O) P 31c 3m
 

Other Iquiqueite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Iquiqueite :
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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Iquiqueite

K3Na4Mg(Cr++++++O4)B24O39(OH)·12(H2O)
Dana No: 27.1.8.1 Strunz No: VI/F.03-10
Locality:

 

Notes:

 

 
   
 
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