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K3Na8Fe3+(SO4)6(OH)2 · 10H2O
Colorless to pale yellow
Probable monoclinic dimorph of ungemachite.
An insufficiently characterised sulphate of Na, K and Fe.
Needs restudy.

Classification of Clinoungemachite

Approved, 'Grandfathered' (first described prior to 1959), Questionable

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

7 : (AB)2(XO4)Zq·xH2O

Physical Properties of Clinoungemachite

Diaphaneity (Transparency):
Colorless to pale yellow

Chemical Properties of Clinoungemachite

IMA Formula:
K3Na8Fe3+(SO4)6(OH)2 · 10H2O
Elements listed in formula:

Crystallography of Clinoungemachite

Crystal System:
Class (H-M):
2/m - Prismatic
Crystals thick tabular {001}, pseudo-rhombohedral. Indistinguishable from crystals of ungemachite.

Type Occurrence of Clinoungemachite

Geological Setting of Type Material:
Oxidized zone of pyrite deposit in arid environment.
Empirical Formula:
K3Na8Fe3+(SO4)6(NO3)2 · 6H2O

Relationship of Clinoungemachite to other Species

7.DG.05DarapskiteNa3(SO4)(NO3) · H2O
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.40CarlosruiziteK3Na2Na3Mg5(IO3)6(SeO4)6 · 6H2O
7.DG.40FuenzalidaiteK3Na5Mg5(IO3)6(SO4)6 · 6H2O
7.DG.45Chelyabinskite(Ca,Mg)3(SO4,CO3)2[Si(OH)6] · 9H2O (?)

Other Names for Clinoungemachite

Name in Other Languages:

Other Information

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 Clinoungemachite

Reference List:
Peacock, M. A. & Bandy, M. C. (1938): Ungemachite and clino-ungemachite: new minerals from Chile. American Mineralogist 23: 314-328.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 597-598.

Internet Links for Clinoungemachite URL:
Please feel free to link to this page.

Localities for Clinoungemachite

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.
Chile (TL)
  • Antofagasta Region
    • El Loa Province
      • Calama
        • Chuquicamata District
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 597; American Mineralogist (1938): 23: 314.
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