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Clinoungemachite

A valid IMA mineral species - grandfathered - questionable
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Formula:
(Na, K, Fe, SO4)
Colour:
Colorless to pale yellow
Lustre:
Vitreous
Crystal System:
Monoclinic
Name:
Probable monoclinic dimorph of ungemachite.
An insufficiently characterised sulphate of Na, K and Fe.
Needs restudy.



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Unique IdentifiersHide

Mindat ID:
1086
Long-form identifier:
mindat:1:1:1086:9

IMA Classification of ClinoungemachiteHide

IMA status:
Approved, 'Grandfathered' (first described prior to 1959), Questionable
IMA Formula:
K3Na8Fe3+(S6+O4)6(OH)2·10H2O
Type description reference:
Peacock, M. A., Bandy, M. C. (1938) Ungemachite and clino-ungemachite: new minerals from Chile. American Mineralogist, 23 (5) 314-328

Classification of ClinoungemachiteHide

Strunz-mindat (2026):
7.DG.10

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 8th ed.:
31.7.3.1

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
CugIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of ClinoungemachiteHide

Lustre:
Vitreous
Transparency:
Transparent
Colour:
Colorless to pale yellow

Optical Data of ClinoungemachiteHide

Type:
Biaxial

Chemistry of ClinoungemachiteHide

Mindat Formula:
(Na, K, Fe, SO4)
Element Weights:
Element% weight
Na100.000 %

Calculated from ideal end-member formula.
Elements listed:
Fe, K, Na, O, S - search for minerals with similar chemistry

Crystallography of ClinoungemachiteHide

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

Geological EnvironmentHide

Type Occurrence of ClinoungemachiteHide

Type Locality:
ⓘ Chuquicamata Mine, Chuquicamata District, Calama, El Loa Province, Antofagasta, Chile
General Appearance of Type Material:
minute thick
tabular pseudorhombohedral crystals
Place of Conservation of Type Material:
Harvard University, Cambridge, Massachusetts, USA.
Geological Setting of Type Material:
Oxidized zone of pyrite deposit in arid environment.
Associated Minerals at Type Locality:
UngemachiteJarositeSideronatriteMetasideronatriteMetavoltine
Fibroferrite
Reference:
Peacock, M. A., Bandy, M. C. (1938) Ungemachite and clino-ungemachite: new minerals from Chile. American Mineralogist, 23 (5) 314-328

Synonyms of ClinoungemachiteHide

Other Language Names for ClinoungemachiteHide

Related Minerals - Strunz-mindat GroupingHide

7.DG.MathesiusiteK5(UO2)4(SO4)4(VO5) · 4H2OTet. 4/m : P4/n
7.DG.05DarapskiteNa3(SO4)(NO3) · H2OMon. 2/m : P21/m
7.DG.10HumberstoniteNa7K3Mg2(SO4)6(NO3)2 · 6H2OTrig. 3 : R3
7.DG.10UngemachiteK3Na8Fe(SO4)6(NO3)2 · 6H2OTrig. 3 : R3
7.DG.15ChiyokoiteCa3Si(CO3)[B(OH)4]O (OH)5 · 12H2OHex. 6 : P63
7.DG.15KottenheimiteCa 3Si(SO4)2(OH)6 · 12H2O Hex. 6/m : P63/m
7.DG.15HielscheriteCa3Si(SO4)(SO3)(OH)6 · 11H2OHex. 6 : P63
7.DG.15JouravskiteCa3Mn4+(SO4)(CO3)(OH)6 · 12H2OHex. 6 : P63
7.DG.15ThaumasiteCa3(SO4)[Si(OH)6](CO3) · 12H2OHex. 6 : P63
7.DG.15BentoriteCa6Cr2(SO4)3(OH)12 · 26H2OTrig. 3m : P31c
7.DG.15CarraraiteCa3(SO4)[Ge(OH)6](CO3) · 12H2OHex.
7.DG.15EttringiteCa6Al2(SO4)3(OH)12 · 26H2OTrig. 3m : P31c
7.DG.15BiruniteCa18(SiO3)8.5(CO3)8.5SO4 · 15H2O(?)
7.DG.15SiwaqaiteCa6Al2(CrO4)3(OH)12 · 26H2OTrig. 3m : P31c
7.DG.15BuryatiteCa3(Si,Fe3+,Al)(SO4)B(OH)4(OH,O)6 · 12H2OTrig. 3m : P31c
7.DG.15CharlesiteCa6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2OTrig. 3m : P31c
7.DG.15TatarinoviteCa3Al(SO4)[B(OH)4](OH)6 · 12H2OHex. 6 : P63
7.DG.15ImayoshiiteCa3Al(CO3)[B(OH)4](OH)6 · 12H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
7.DG.15SturmaniteCa6Fe3+2(SO4)2.5[B(OH)4](OH)12 · 25H2OTrig. 3m : P31c
7.DG.20RapidcreekiteCa2(SO4)(CO3) · 4H2OOrth. mmm(2/m2/m2/m) : Pbcn
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(32/m) : P3c1
7.DG.40CarlosruiziteK6(Na,K)4Na6Mg10(SeO4)12(IO3)12 · 12H2OTrig. 3m(32/m) : P3c1
7.DG.45'Chelyabinskite'(Ca,Mg)3(SO4,CO3)2[Si(OH)6] · 9H2O (?)Orth.
7.DG.55Ramazzoite[Mg8Cu12(PO4)(CO3)4(OH)24(H2O)20][(H0.33SO4)3(H2O)36]Iso. 43m : P43m
7.DG.60WitzkeiteNa4K4Ca(NO3)2(SO4)4 · 2H2O Mon. 2/m : B2/b

Other InformationHide

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

Internet Links for ClinoungemachiteHide

References for ClinoungemachiteHide

Localities for ClinoungemachiteHide

Showing 1 localities.

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.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Chile (TL)
 
  • Antofagasta
    • El Loa Province
      • Calama
        • Chuquicamata District
Peacock et al. (1938) +1 other reference
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