Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery


This page is currently not sponsored. Click here to sponsor this page.
Carlos Ruiz Fuller
K3Na2Na3Mg5(IO3)6(SeO4)6 · 6H2O
Colourless to pale ...
2½ - 3
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 Carlosruizite


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 Carlosruizite

Diaphaneity (Transparency):
Colourless to pale yellow.
Hardness (Mohs):
2½ - 3
3.400 g/cm3 (Calculated)

Optical Data of Carlosruizite

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 Carlosruizite

IMA Formula:
K3Na2Na3Mg5(IO3)6(SeO4)6 · 6H2O
Elements listed in formula:
Analytical Data:
Electron microprobe, wt.%, mean of 10 analyses
K2O 6.7
Na2O 4.7
MgO 9.2
SO3 7.9
SeO3 19.0
CrO3 2.5
I2O5 45.6

total 95.6

Crystallography of Carlosruizite

Crystal System:
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
Space Group Setting:
Cell Parameters:
a = 9.5901(8) Å, c = 27.56(2) Å
a:c = 1 : 2.874
Unit Cell Volume:
V 2,195.11 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction Data:
13.75 (30)
7.10 (20)
3.561 (100)
3.082 (32)
3.058 (39)
2.715 (39)

Type Occurrence of Carlosruizite

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

Relationship of Carlosruizite to other Species

Forms a series with Fuenzalidaite (see here)
7.DG.05DarapskiteNa3(SO4)(NO3) · H2O
7.DG.10ClinoungemachiteK3Na8Fe3+(SO4)6(OH)2 · 10H2O
7.DG.10HumberstoniteK3Na7Mg2(SO4)6(NO3)2 · 6H2O
7.DG.10UngemachiteK3Na8Fe3+(SO4)6(NO3)2 · 6H2O
7.DG.15BentoriteCa6Cr2(SO4)3(OH)12 · 26H2O
7.DG.15CharlesiteCa6Al2(SO4)2B(OH)4(OH,O)12 · 26H2O
7.DG.15EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
7.DG.15JouravskiteCa3Mn4+(SO4)(CO3)(OH)6 · 12H2O
7.DG.15SturmaniteCa6Fe23+(SO4)2.5[B(OH)4](OH)12 · 25H2O
7.DG.15ThaumasiteCa3Si(OH)6(SO4)(CO3) · 12H2O
7.DG.15CarraraiteCa3Ge(SO4)(CO3)(OH)6 · 12H2O
7.DG.15BuryatiteCa3(Si,Fe3+,Al)SO4B(OH)4(OH,O)6 · 12H2O
7.DG.20RapidcreekiteCa2(SO4)(CO3) · 4H2O
7.DG.20KorkinoiteCa4(SO4)2(CO3)2 · 9(H2O)
7.DG.25TatarskiteCa6Mg2(SO4)2(CO3)2(OH)4Cl4 · 7H2O
7.DG.30NakauriiteCu8(SO4)4(CO3)(OH)6 · 48H2O
7.DG.35ChessexiteNa4Ca2Mg3Al8(SiO4)2(SO4)10(OH)10 · 40H2O
7.DG.40FuenzalidaiteK3Na5Mg5(IO3)6(SO4)6 · 6H2O
7.DG.45Chelyabinskite(Ca,Mg)3(SO4,CO3)2[Si(OH)6] · 9H2O (?) · 6H2O

Other Names for Carlosruizite

Name in Other Languages:

Other Information

Other Information:
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 Carlosruizite

Reference List:
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 Carlosruizite URL:
Please feel free to link to this page.

Localities for Carlosruizite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
  • Tarapacá Region
    • El Tamarugal Province
Gunnar Farber specimen label.
[American Mineralogist (1994) 79, 1003-1008; MinRec 27:201]
Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2017, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: May 26, 2017 14:12:05 Page generated: April 28, 2017 12:19:08
Go to top of page