Selenojunoite

Where it forms, where it's found

Type locality: Srednyaya Padma mine
Zaonezhie peninsula
Medvezhyegorsky District
Republic of Karelia
Russia
62.3767°, 35.2739°

1recorded occurrences

Source · OpenStreetMap

Safety & handling

Crystallography

Crystal system: Monoclinic
Space group: C2/m
Cell parameters: a = 26.98(1) Å · b = 4.095(1) Å · c = 17.353(7) Å
Cell angles: β = 127.74(6) °
Ratio a:b:c: 1 : 0.152 : 0.643

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
83BiBismuth Bismuth 8 208.980 1671.840
45.38%
34SeSelenium Selenium 16 78.971 1263.536
34.30%
82PbLead Lead 3 207.200 621.600
16.87%
29CuCopper Copper 2 63.546 127.092
3.45%
Total 3684.068 100.00%
Mass share = atoms × atomic mass ÷ molar mass × 100
From Mindat formula

Mass composition breakdown
Element	Atoms	At. mass g/mol	Mass g/mol	Mass share
83BiBismuth	Bismuth	8	208.980	1671.840	45.38%
34SeSelenium	Selenium	16	78.971	1263.536	34.30%
82PbLead	Lead	3	207.200	621.600	16.87%
29CuCopper	Copper	2	63.546	127.092	3.45%
	Total	3684.068	100.00%

Synonyms

Selenojunoiet

In other languages

German: Selenojunoit

Classification

Strunz

10th ed.

2.JB

2Sulfides and SulfosaltsClass
2.JSulfosalts of PbS archetypeDivision
2.JBGalena derivatives, with PbGroup
2.JBSelenojunoiteSpecies

Literature, links & citation

Citations

2023Bosi, Ferdinando, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2023) Newsletter 75. Mineralogical Magazine, 1-4 doi:10.1180/mgm.2023.76DOI: 10.1180/mgm.2023.76

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Selenojunoite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/selenojunoite-470893},
  note      = {Accessed 2026-05-11}
}