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About CarlosruiziteHide

Carlos Ruiz Fuller
K6(Na,K)4Na6Mg10(SeO4)12(IO3)12 · 12H2O
Colourless to pale yellow.
2½ - 3
Specific Gravity:
3.400 (Calculated)
Crystal System:
Named in 1994 by Judith A. Konnert, Howard T. Evans, Jr., James J. McGee, and George E. Ericksen in honor of Carlos Ruiz Fuller [September 23, 1916 Valparaiso, Chile – March 28, 1997 Santiago, Chile], first Director of the Chilean Geological Survey.
Isostructural with:
Carlosruizite-Fuenzalidaite Series. The Se analogue of fuenzalidaite. Unique combination of elements; the only selenate-iodate mineral known. The first Se-bearing material among the Chilean nitrate ores.

Leached from 'Caliche Amarillo'.

The structure is based on two complex slabs, normal to the c axis; each slab consists of a double layer formed by trigonal-pyramidal iodate groups, bounded at the top and bottom by layers of (Se,S,Cr)O4 groups. The layers are separated by K+, with Na+ and Mg2+ helding the layer complex together. The structure somewhat resembles that of alunite group members.

Classification of CarlosruiziteHide


7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
G : With large and medium-sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3
Dana 7th ed.:

1 : Miscellaneous

Physical Properties of CarlosruiziteHide

Colourless to pale yellow.
2½ - 3 on Mohs scale
3.400 g/cm3 (Calculated)

Optical Data of CarlosruiziteHide

Uniaxial (-)
RI values:
nω = 1.655() nε = 1.642(1)
Max Birefringence:
δ = 0.013
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of CarlosruiziteHide

K6(Na,K)4Na6Mg10(SeO4)12(IO3)12 · 12H2O
IMA Formula:
K3Na2Na3Mg5(IO3)6(SeO4)6 · 6H2O

Crystallography of CarlosruiziteHide

Crystal System:
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
Cell Parameters:
a = 9.5901(8) Å, c = 27.56(2) Å
a:c = 1 : 2.874
Unit Cell V:
2,195.11 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
13.75 (30)
7.10 (20)
3.561 (100)
3.082 (32)
3.058 (39)
2.715 (39)

Type Occurrence of CarlosruiziteHide

General Appearance of Type Material:
thin hexagonal plates, {0001} form (beveled by {10_12} at the edges), up to 0.2 mm
Geological Setting of Type Material:
"caliche amarillo" (yellow nitrate ore) leachate
Associated Minerals at Type Locality:

Synonyms of CarlosruiziteHide

Other Language Names for CarlosruiziteHide

Relationship of Carlosruizite to other SpeciesHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Nitratine1 photo of Carlosruizite associated with Nitratine on

Related Minerals - Nickel-Strunz GroupingHide

7.DG.05DarapskiteNa3(SO4)(NO3) · H2OMon. 2/m
7.DG.10Clinoungemachite(Na, K, Fe, SO4)Mon. 2/m
7.DG.10HumberstoniteNa7K3Mg2(SO4)6(NO3)2 · 6H2OTrig. 3 : R3
7.DG.10UngemachiteK3Na8Fe(SO4)6(NO3)2 · 6H2OTrig. 3 : R3
7.DG.15BentoriteCa6(Cr3+,Al)2(SO4)3(OH)12 · 26H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
7.DG.15CharlesiteCa6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2OTrig. 3m : P3 1c
7.DG.15EttringiteCa6Al2(SO4)3(OH)12 · 26H2OTrig. 3m : P3 1c
7.DG.15JouravskiteCa3Mn4+(SO4)(CO3)(OH)6 · 12H2OHex.
7.DG.15SturmaniteCa6(Fe3+,Al,Mn3+)2(SO4)2[B(OH)4](OH)12 · 25H2OTrig. 3m : P3 1c
7.DG.15ThaumasiteCa3(SO4)[Si(OH)6](CO3) · 12H2OHex. 6 : P63
7.DG.15CarraraiteCa3(SO4)[Ge(OH)6](CO3) · 12H2OHex.
7.DG.15BuryatiteCa3(Si,Fe,Al)(SO4)[B(OH)4]O(OH)5 · 12H2O
7.DG.20RapidcreekiteCa2(SO4)(CO3) · 4H2OOrth.
7.DG.20KorkinoiteCa4(SO4)2(CO3)2 · 9(H2O)Orth. mmm (2/m 2/m 2/m) : Pmmm
7.DG.25TatarskiteCa6Mg2(SO4)2(CO3)2(OH)4Cl4 · 7H2OOrth.
7.DG.30NakauriiteCu8(SO4)4(CO3)(OH)6 · 48H2OOrth.
7.DG.35Chessexite(Na,K)4Ca2(Mg,Zn)3Al8(SO4)10(SiO4)2 · 40H2OOrth.
7.DG.40FuenzalidaiteK6(Na,K)4Na6Mg10(SO4)12(IO3)12 · 12H2OTrig. 3m (3 2/m) : P3c1
7.DG.45Chelyabinskite(Ca,Mg)3(SO4,CO3)2[Si(OH)6] · 9H2O (?)Orth.

Related Minerals - Dana Grouping (8th Ed.)Hide,K)4Na6Mg10(SO4)12(IO3)12 · 12H2OTrig. 3m (3 2/m) : P3c1

Other InformationHide

Slowly soluble in H2O
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for CarlosruiziteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
New Minerals (1997), New Minerals 1990-1994.
Konnert, J.A., Evans, H.T.Jr., McGee, J.J., Ericksen, G.E. (1994): Mineralogical studies of the nitrate deposits of Chile: VII. Two new saline minerals with the composition K6(Na,K)4Na6Mg10(XO4)12(IO3)12.l2H2O: Fuenzalidaite (X = S) and carlosruizite (X = Se). American Mineralogist: 79: 1003-1008.

Internet Links for CarlosruiziteHide

Localities for CarlosruiziteHide

ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Tarapacá Region
    • El Tamarugal Province
Gunnar Färber specimen label.
[American Mineralogist (1994) 79, 1003-1008; MinRec 27:201]
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