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Carlosruizite

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Carlos Ruiz Fuller
Formula:
K6(Na,K)4Na6Mg10(SeO4)12(IO3)12 · 12H2O
Colour:
Colourless to pale yellow.
Lustre:
Vitreous
Hardness:
2½ - 3
Specific Gravity:
3.400 (Calculated)
Crystal System:
Trigonal
Name:
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.


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Classification of CarlosruiziteHide

Approved
7.DG.40

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.:
23.1.2.2
23.1.2.2

23 : COMPOUND IODATES
1 : Miscellaneous

Physical Properties of CarlosruiziteHide

Vitreous
Transparency:
Transparent
Colour:
Colourless to pale yellow.
Hardness:
2½ - 3 on Mohs scale
Density:
3.400 g/cm3 (Calculated)

Optical Data of CarlosruiziteHide

Type:
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:
Moderate

Chemical Properties of CarlosruiziteHide

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

Crystallography of CarlosruiziteHide

Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
P3c1
Setting:
P3c1
Cell Parameters:
a = 9.5901(8) Å, c = 27.56(2) Å
Ratio:
a:c = 1 : 2.874
Unit Cell V:
2,195.11 ų (Calculated from Unit Cell)
Z:
1

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
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 mindat.org.

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

23.1.2.1FuenzalidaiteK6(Na,K)4Na6Mg10(SO4)12(IO3)12 · 12H2OTrig. 3m (3 2/m) : P3c1

Other InformationHide

Notes:
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

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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.
Chile
 
  • Tarapacá Region
    • El Tamarugal Province
Gunnar Färber specimen label.
[American Mineralogist (1994) 79, 1003-1008; MinRec 27:201]
Mineral and/or Locality  
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