Log InRegister
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreOur ScienceMindat Newsletter [Free Download]Contact Us
Donate to MindatSponsor a PageCorporate SponsorshipSponsored Pages
Learning CenterWhat Is a Mineral?The Most Common Minerals on EarthInformation for EducatorsMindat ArticlesMindat Newsletter [Free Download]The ElementsThe Mineral Quiz
Search FormMinerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDMinerals by CountryAlphabetical Mineral IndexAlphabetical Locality SearchMineral Association SearchList of CountriesLocalities Near MePhoto SearchSearch ArticlesSearch GlossaryThe Rock H. Currier Digital LibraryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
MineralsPetrologyFossilsMeteoritesGeologic Time
Mining CompaniesStatisticsMineral MuseumsClubs & OrganizationsMineral Shows & EventsDevice SettingsTime Machine
Read DiscussionsIdentification Request
Photo SearchPhoto GalleriesSearch by ColourPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Selenojalpaite

A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
Formula:
Ag3CuSe2
Colour:
Dark grey
Lustre:
Metallic
Hardness:
4 - 4½
Specific Gravity:
7.64 (Calculated)
Crystal System:
Tetragonal
Name:
The name ndicates that it is the Se-dominant analogue of jalpaite.
This page provides mineralogical data about Selenojalpaite.


Hide all sections | Show all sections

Unique IdentifiersHide

Mindat ID:
27493
Long-form identifier:
mindat:1:1:27493:9

IMA Classification of SelenojalpaiteHide

IMA status:
Approved
IMA Formula:
Ag1+3Cu1+Se2-2
Approval year:
2004
First published:
2005

Classification of SelenojalpaiteHide

Strunz-mindat (2026):
2.BA.45

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

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

Physical Properties of SelenojalpaiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Dark grey
Streak:
Black
Hardness:
4 - 4½ on Mohs scale
Hardness:
VHN25=36 - 40 kg/mm2 - Vickers
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
7.64 g/cm3 (Calculated)

Optical Data of SelenojalpaiteHide

Anisotropism:
Without characteristic rotation-tints.
Bireflectance:
Weakly to moderately bireflectant.
Reflectivity:
WavelengthR1 (%)R2 (%)
400nm35.2%36.7%
420nm34.8%36.9%
440nm34.3%37.1%
460nm33.8%37.4%
471nm33.5%37.1%
480nm33.2%36.7%
500nm32.9%36.3%
520nm32.5%35.9%
540nm32.1%35.3%
548nm31.8%35.1%
560nm31.3%34.7%
580nm30.9%34.3%
586nm30.4%34.0%
600nm30.0%33.6%
620nm29.7%33.2%
640nm29.5%32.7%
652nm29.3%32.4%
660nm29.0%32.1%
660nm29.0%32.1%
680nm28.8%31.7%
700nm28.6%31.2%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 37.4%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Light grey
Internal Reflections:
None
Pleochroism:
Weak
Comments:
Brownish grey to slightly darker greenish grey.

Chemistry of SelenojalpaiteHide

Mindat Formula:
Ag3CuSe2
Element Weights:
Element% weight
Ag59.369 %
Se28.972 %
Cu11.658 %

Calculated from ideal end-member formula.
Ag
Se
Cu
Elements listed:
Ag, Cu, Se - search for minerals with similar chemistry

Crystallography of SelenojalpaiteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm(4/m2/m2/m) - Ditetragonal Dipyramidal
Space Group:
I41/amd
Cell Parameters:
a = 8.939 Å, c = 11.844 Å
Ratio:
a:c = 1 : 1.325
Unit Cell V:
946.4 ų
Z:
8

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.47 Å(60)
2.891 Å(85)
2.813 Å(80)
2.473 Å(75)
2.426 Å(100)
2.162 Å(70)
2.034 Å(65)
Locality:
Skrikerum Mine, Valdemarsvik, Östergötland County, Sweden
Comments:
Format: d/A (I/%) (hkl)
From type description

Geological EnvironmentHide

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

Type Occurrence of SelenojalpaiteHide

Type Locality:
ⓘ Skrikerum Mine, Valdemarsvik, Östergötland County, Sweden
General Appearance of Type Material:
Anhedral to subhedral grains up to 200 µm across.
Place of Conservation of Type Material:
Natural History Museum, University of Florence, Italy, # 1768/I.
Geological Setting of Type Material:
Cu–Ag–Tl selenide deposit.
Associated Minerals at Type Locality:
AltaiteBerzelianiteChalcopyriteEucairite

Synonyms of SelenojalpaiteHide

Other Language Names for SelenojalpaiteHide

Simplified Chinese:硒铜三银矿
Traditional Chinese:硒銅三銀礦

Related Minerals - Strunz-mindat GroupingHide

2.BA.MakotoiteAg12(Cu3Au)S8Trig. 3m(32/m) : R3c
2.BA.AlburniteAg8GeTe2S4Iso.
2.BA.DzierżanowskiteCaCu2S2Trig. 3m(32/m) : P3m1
2.BA.XuwenyuaniteAg9Fe3+Te2S4Iso. 43m : F43m
2.BA.'Orileyite'(Fe,Cu)2As
2.BA.JuxingiteBi6Cu+138Cu2+2Fe3+30S125Iso. 43m : F43m
2.BA.LuoxianchangiteAg8SnS4Se2Orth. mmm(2/m2/m2/m)
2.BA.05DjurleiteCu31S16Mon. 2/m : P21/c
2.BA.05GeeriteCu8S5Trig. 3
2.BA.05RoxbyiteCu58S32Tric. 1 : P1
2.BA.05ChalcociteCu2SMon. 2/m : P21/c
2.BA.10DigeniteCu9S5Trig. 3m(32/m) : R3m
2.BA.10AniliteCu7S4Orth. mmm(2/m2/m2/m) : Pnma
2.BA.15BorniteCu5FeS4Orth. mmm(2/m2/m2/m) : Pbca
2.BA.20BellidoiteCu2SeTet. 4/m : P42/n
2.BA.20BerzelianiteCu2-xSe (x ≈ 0.12)Iso. m3m(4/m32/m) : Fm3m
2.BA.25AthabascaiteCu5Se4Orth.
2.BA.25UmangiteCu3Se2Tet. 42m : P421m
2.BA.30RickarditeCu7Te5Orth. mmm(2/m2/m2/m) : Pmmn
2.BA.30WeissiteCu2-xTeHex. 6/mmm(6/m2/m2/m) : P6/mmm
2.BA.35AcanthiteAg2SMon. 2/m : P21/m
2.BA.35SpryiteAg8(As3+0.5As5+0.5)S6Orth. mm2 : Pna21
2.BA.40d'UM2003-13-S:AgAuCu'Ag6AuCu2S5
2.BA.40MckinstryiteAg5-xCu3+xS4Orth. mmm(2/m2/m2/m) : Pnma
2.BA.40StromeyeriteAgCuSOrth. mmm(2/m2/m2/m)
2.BA.42HoneaiteAu3TlTe2 Orth. mmm(2/m2/m2/m) : Pbcm
2.BA.45JalpaiteAg3CuS2Tet. 4/mmm(4/m2/m2/m) : I41/amd
2.BA.45KuriliteAg8Te3SeTrig. 3 : R3
2.BA.47Spiridonovite(Cu1-xAgx)2TeTrig. 3m(32/m) : P3c1
2.BA.50WuyanzhiiteCu2STet. 422 : P43212
2.BA.50EucairiteAgCuSeOrth.
2.BA.52'Argentite'Ag2SIso.
2.BA.55NaumanniteAg2SeOrth. 222 : P212121
2.BA.55AguilariteAg4SeSMon. 2/m : P21/c
2.BA.60ChenguodaiteAg9Fe3+Te2S4Orth.
2.BA.60HessiteAg2TeMon. 2/m : P21/c
2.BA.60CervelleiteAg4TeSMon. 2/m : P21/c
2.BA.65Henryite(Cu,Ag)3+xTe2 , with x ~ 0.40Iso. m3m(4/m32/m) : Fd3c
2.BA.65StütziteAg5-xTe3, x = 0.24-0.36Hex. 6 : P6
2.BA.70ArgyroditeAg8GeS6Orth. mm2 : Pna21
2.BA.70Putzite(Cu4.7Ag3.3)GeS6Iso. 43m : F43m
2.BA.70CanfielditeAg8SnS6Orth. mm2 : Pna21
2.BA.75FischesseriteAg3AuSe2Iso. 432 : I4132
2.BA.75UytenbogaardtiteAg3AuS2Trig. 3m(32/m) : R3c
2.BA.75Penzhinite(Ag,Cu)4Au(S,Se)4Hex. 622 : P6322
2.BA.75PetrovskaiteAuAgSMon.
2.BA.75PetziteAg3AuTe2Iso. 432 : I4132
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 SelenojalpaiteHide

References for SelenojalpaiteHide

Localities for SelenojalpaiteHide

Showing 4 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.
Hide all sections | Show all sections

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.
Brazil
 
  • Goiás
    • Cavalcante
Pires et al. (2020)
Germany
 
  • Hesse
    • Darmstadt
      • Darmstadt-Dieburg
        • Mühltal
          • Nieder-Ramstadt
Belendorff (2021)
Poland
 
  • Lower Silesian Voivodeship
    • Wrocław County
      • Gmina Sobótka
        • Nasławice
Galuskin et al. (2003)
Sweden (TL)
 
  • Östergötland County
    • Valdemarsvik
Bindi et al. (2005) +1 other reference
Quick NavTopUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesStrunz-MindatOther InformationInternet Links References Localities Locality List
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: October 21, 2026 00:49:40 Page updated: September 23, 2026 06:18:59
Go to top of page