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Umangite

A valid IMA mineral species - grandfathered
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About UmangiteHide

Formula:
Cu3Se2
Colour:
Red, bluish red-black, iridescent violet-blue (tarnished)
Lustre:
Metallic
Hardness:
3
Specific Gravity:
6.44 - 6.49
Crystal System:
Tetragonal
Name:
Named after its supposed discovery locality, Sierra de Umango (Umango Mountains), Argentina, although in reality it does not occur there but came rather from a neighbouring range called the Sierra de Cacho (see also text in http://www.mindat.org/loc-146779.html).

Unique IdentifiersHide

Mindat ID:
4090
Long-form identifier:
mindat:1:1:4090:3
GUID
(UUID V4):
4294e305-3cef-4af9-bb0b-e372ffbd4b8d

Classification of UmangiteHide

Approved, 'Grandfathered' (first described prior to 1959)
First published:
1891
2.BA.25

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
A : With Cu, Ag, Au
2.5.1.1

2 : SULFIDES
5 : AmBnXp, with (m+n):p = 3:2
3.1.11

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
1 : Sulphides etc. of Cu

Mineral SymbolsHide

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

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference
UmIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
UmThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of UmangiteHide

Metallic
Transparency:
Opaque
Colour:
Red, bluish red-black, iridescent violet-blue (tarnished)
Streak:
Black
Hardness:
Hardness:
VHN100=88 - 100 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
poor, rectangular
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
6.44 - 6.49 g/cm3 (Measured)    6.590 g/cm3 (Calculated)

Optical Data of UmangiteHide

Anisotropism:
Very strong; fiery orange to straw-yellow with a rose tint.
Pleochroism:
Visible
Comments:
reddish purple to grayish blue.

Chemical Properties of UmangiteHide

Formula:
Cu3Se2
Common Impurities:
Ag

Crystallography of UmangiteHide

Crystal System:
Tetragonal
Class (H-M):
4 2m - Scalenohedral
Space Group:
P4 21m
Cell Parameters:
a = 6.4024(5) Å, c = 4.2786(4) Å
Ratio:
a:c = 1 : 0.668
Unit Cell V:
175.38 ų (Calculated from Unit Cell)
Z:
2
Twinning:
Rarely lamellar

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0009926UmangiteMilman V (2002) Klockmannite, CuSe: structure, properties and phase stability from ab initio modeling Acta Crystallographica B58 437-4472002hypothetical structure calculated using DFT0293
0012164UmangiteHeyding R D, Murray R M (1976) Crystal structures of Cu1.8Se, Cu3Se2, alpha- and gamma=CuSe, CuSe2, and CuSe2II Canadian Journal of Chemistry 54 841-8481976Beaverlodge Region, Saskatchewan, Canada0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.559 Å(100)
1.829 Å(90)
1.778 Å(80)
3.108 Å(70)
2.258 Å(70)
3.202 Å(60)
1.908 Å(50)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-𝑇 alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of UmangiteHide

Reference:
Klockmann, F. (1891) Mineralogische mittheilungen aus den sammlungen der Bergakademie zu Clausthal. Zeitschrift für Krystallographie und Mineralogie: 19: 265-275 (269).

Other Language Names for UmangiteHide

German:Umangit
Simplified Chinese:红硒铜矿
Spanish:Umangita
Traditional Chinese:紅硒銅礦

Relationship of Umangite to other SpeciesHide

Other Members of this group:
BerzelianiteCu2-xSe (x ≈ 0.12)Iso. m3m (4/m 3 2/m) : Fm3m

Common AssociatesHide

BerzelianiteCu2-xSe (x ≈ 0.12)
CalciteCaCO3
ChalcomeniteCuSeO3 · 2H2O
ChalcopyriteCuFeS2
ClausthalitePbSe
CobaltiteCoAsS
EucairiteAgCuSe
GuanajuatiteBi2Se3
HessiteAg2Te
KlockmanniteCuSe
MalachiteCu2(CO3)(OH)2
NaumanniteAg2Se
PyriteFeS2
TiemanniteHgSe
Associated Minerals Based on Photo Data:
72 photos of Umangite associated with ClausthalitePbSe
62 photos of Umangite associated with CalciteCaCO3
40 photos of Umangite associated with KlockmanniteCuSe
33 photos of Umangite associated with BerzelianiteCu2-xSe (x ≈ 0.12)
25 photos of Umangite associated with ChalcomeniteCuSeO3 · 2H2O
21 photos of Umangite associated with EucairiteAgCuSe
18 photos of Umangite associated with Krut'aiteCuSe2
15 photos of Umangite associated with MalachiteCu2(CO3)(OH)2
14 photos of Umangite associated with Penroseite(Ni,Co,Cu)Se2
14 photos of Umangite associated with PetroviciteCu3HgPbBiSe5

Related Minerals - Strunz-mindat GroupingHide

2.BA.Orileyite(Fe,Cu)2As
2.BA.AlburniteAg8GeTe2S4Iso.
2.BA.DzierżanowskiteCaCu2S2Trig. 3m (3 2/m) : P3m1
2.BA.MakotoiteAg12(Cu3Au)S8Trig. 3m (3 2/m) : R3c
2.BA.XuwenyuaniteAg9Fe3+Te2S4Iso. 4 3m : F4 3m
2.BA.05ChalcociteCu2SMon. 2/m : P21/b
2.BA.05DjurleiteCu31S16Orth. mmm (2/m 2/m 2/m) : Pnnm
2.BA.05GeeriteCu8S5Trig. 3
2.BA.05RoxbyiteCu9S5Tric. 1 : P1
2.BA.10AniliteCu7S4Orth. mmm (2/m 2/m 2/m) : Pnma
2.BA.10DigeniteCu9S5Trig. 3m (3 2/m) : R3m
2.BA.15BorniteCu5FeS4Orth. mmm (2/m 2/m 2/m) : Pbca
2.BA.20BellidoiteCu2SeTet. 4/m : P42/n
2.BA.20BerzelianiteCu2-xSe (x ≈ 0.12)Iso. m3m (4/m 3 2/m) : Fm3m
2.BA.25AthabascaiteCu5Se4Orth.
2.BA.30RickarditeCu7Te5Orth. mmm (2/m 2/m 2/m) : Pmmn
2.BA.30WeissiteCu2-xTeHex. 6/mmm (6/m 2/m 2/m) : P6/mmm
2.BA.35AcanthiteAg2SMon. 2/m : P21/m
2.BA.35SpryiteAg8(As3+0.5As5+0.5)S6Orth. mm2 : Pna21
2.BA.40MckinstryiteAg5-xCu3+xS4Orth. mmm (2/m 2/m 2/m) : Pnma
2.BA.40StromeyeriteAgCuSOrth. mmm (2/m 2/m 2/m)
2.BA.40dUM2003-13-S:AgAuCuAg6AuCu2S5
2.BA.42HoneaiteAu3TlTe2 Orth. mmm (2/m 2/m 2/m) : Pbcm
2.BA.45JalpaiteAg3CuS2Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
2.BA.45KuriliteAg8Te3SeTrig. 3 : R3
2.BA.45SelenojalpaiteAg3CuSe2Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
2.BA.47Spiridonovite(Cu1-xAgx)2TeTrig. 3m (3 2/m) : P3c1
2.BA.50EucairiteAgCuSeOrth.
2.BA.50WuyanzhiiteCu2STet. 4 2 2 : P43 21 2
2.BA.52ArgentiteAg2SIso.
2.BA.55AguilariteAg4SeSMon. 2/m
2.BA.55NaumanniteAg2SeOrth. 2 2 2 : P21 21 21
2.BA.60CervelleiteAg4TeSMon. 2/m
2.BA.60HessiteAg2TeMon. 2/m : P21/b
2.BA.60ChenguodaiteAg9Fe3+Te2S4Orth.
2.BA.65Henryite(Cu,Ag)3+xTe2 , with x ~ 0.40 Iso. m3m (4/m 3 2/m) : Fd3c
2.BA.65StütziteAg5-xTe3, x = 0.24-0.36Hex. 6 : P6
2.BA.70ArgyroditeAg8GeS6Orth. mm2 : Pna21
2.BA.70CanfielditeAg8SnS6Orth. mm2
2.BA.70Putzite(Cu4.7Ag3.3)GeS6Iso. 4 3m : F4 3m
2.BA.75FischesseriteAg3AuSe2Iso. 4 3 2 : I41 3 2
2.BA.75Penzhinite(Ag,Cu)4Au(S,Se)4Hex. 6 2 2 : P63 2 2
2.BA.75PetrovskaiteAuAgSMon.
2.BA.75PetziteAg3AuTe2Iso. 4 3 2 : I41 3 2
2.BA.75UytenbogaardtiteAg3AuS2Trig. 3m (3 2/m) : R3c
2.BA.80Bezsmertnovite(Au,Ag)4Cu(Te,Pb)Orth.
2.BA.80BilibinskitePbCu2Au3Te2Iso.
2.BA.80Bogdanovite(Au,Te,Pb)3(Cu,Fe)Iso.

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 UmangiteHide

References for UmangiteHide

Reference List:

Localities for UmangiteHide

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 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.
Argentina
 
  • La Rioja Province
    • Capital Department
      • Puerto Alegre
    • Chilecito department
      • Sañogasta
    • General Lamadrid department
      • Villa Castelli
    • Vinchina Department
  • Mendoza Province
    • Luján de Cuyo department
      • Cacheuta District
          • Cerro de Cacheuta
Australia
 
  • South Australia
    • Eyre Peninsula
      • Middleback Range
        • Iron Knob
  • Western Australia
    • East Pilbara Shire
      • Rudall River District
    • Kalgoorlie-Boulder Shire
      • Kalgoorlie-Boulder
        • Kalgoorlie Consolidated Gold Mines
Austria
 
  • Styria
    • Bruck-Mürzzuschlag District
      • Neuberg an der Mürz
        • Altenberg an der Rax
          • Eselberg
Bolivia
 
  • La Paz
    • Aroma Province
      • Laurani District
  • Potosí
    • Antonio Quijarro Province
      • Porco Municipality
Canada
 
  • Nunavut
    • Kivalliq Region
      • Baker Lake
  • Ontario
    • Haliburton County
      • Highlands East Township
        • Cardiff Township
  • Québec
    • Abitibi-Témiscamingue
      • Rouyn-Noranda TE
  • Saskatchewan
    • Beaverlodge Lake area
        • Beaverlodge Lake
    • Lake Athabasca
China
 
  • Anhui
    • Huaibei
      • Suixi Co.
        • Sanpu ore field
  • Hubei
    • Huangshi
      • Daye Co.
      • Yangxin Co.
        • Fengshan ore field
  • Jiangxi
    • Shangrao
      • Dexing Co.
        • Dexing Cu-Mo-Au ore field
          • Dexing copper mine
  • Sichuan
    • Liangshan Yi
      • Huili County
Czech Republic
 
  • Central Bohemian Region
      • Háje
        • Uranium Mine No. 16
  • Olomouc Region
    • Jeseník District
      • Javorník
        • Zálesí
  • Plzeň Region
    • Klatovy District
      • Nalžovské Hory
        • Ústaleč
    • Tachov District
      • Zadní Chodov
  • South Bohemian Region
    • Písek District
      • Kovářov
        • Předbořice
  • South Moravian Region
    • Brno-Country District
  • Vysočina Region
    • Žďár nad Sázavou District
      • Nové Město na Moravě
      • Rožná
        • Rožná deposit
DR Congo
 
  • Haut-Katanga
    • Kambove Territory
      • Shinkolobwe
France
 
  • Auvergne-Rhône-Alpes
    • Puy-de-Dôme
      • Issoire
        • Le Vernet-Chaméane
  • Grand Est
    • Haut-Rhin
      • Thann-Guebwiller
        • Kruth
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Oberwolfach
      • Waldshut
        • St Blasien
          • Menzenschwand
  • Bavaria
    • Upper Franconia
      • Wunsiedel im Fichtelgebirge
        • Kirchenlamitz
          • Großschloppen
    • Upper Palatinate
  • Lower Saxony
    • Goslar District
      • Braunlage
        • St Andreasberg
      • Harz (Landkreis Goslar)
    • Göttingen District
      • Osterode am Harz
        • Lerbach
      • Walkenried
        • Zorge
    • Sieber
  • Saxony-Anhalt
    • Harz
      • Ballenstedt
        • Rieder
    • Mansfeld-Südharz
      • Mansfeld
  • Saxony
    • Erzgebirgskreis
      • Aue-Bad Schlema
    • Zwickau District
      • Hartenstein
Greenland
 
  • Kujalleq
    • Qaqortoq
Mexico
 
  • Durango
    • Mapimí Municipality
      • Mapimí
Middle East
 
Namibia
 
  • Oshikoto Region
    • Tsumeb
Poland
 
  • Lower Silesian Voivodeship
    • Karkonosze County
    • Kłodzko County
      • Gmina Stronie Śląskie
Russia
 
  • Irkutsk Oblast
    • Bodaybinsky District
      • Bodaibo
        • Lena Gold District
          • Kropotkinsky ore cluster
Sweden
 
  • Östergötland County
    • Valdemarsvik
UK
 
  • England
    • Devon
      • Torbay
        • Torquay
USA
 
  • Colorado
    • San Juan County
      • Minnesota Gulch
  • New Jersey
    • Sussex County
      • Franklin
  • Washington
    • Ferry County
      • Republic Mining District
 
Mineral and/or Locality  
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