CMMMech
CMMMech > Mineral > Petrukite

Petrukite mineral

Indium- and tin-bearing copper-iron-zinc-silver sulfide mineral of the stannite group with current September 2026 IMA-CNMNC approved formula (Cu,Ag)2(Fe,Zn)(Sn,In)S4 and approval number IMA 1985-052. Kissin and Owens (1989) characterized petrukite on cotype specimens (GSC 65049-65052, plus Herb claim metatypes AMNH T98797, BM 1987,94, Ecole des Mines T44352, and NMNH 163779) from three co-type localities: the Herb claim, Cassiar District, Turnagain River area, British Columbia, Canada; the Mount Pleasant mine, Charlotte County, New Brunswick, Canada; and the Ikuno mine, Hyogo Prefecture, Japan. Electron-microprobe analyses across the three localities (Table 5, p. 682) yielded a Herb claim mean empirical formula of (Cu1.85Fe0.95Zn0.24Ag0.03)Sigma3.07(Sn0.89In0.05)Sigma0.94S3.99 (0.05 apfu In), Mount Pleasant compositions with 0.02-0.04 apfu In, and Ikuno mine compositions spanning 0.07-0.21 apfu In via the coupled substitution Cu+ + Sn4+ <-> In3+ + Zn2+. Precession single-crystal and powder X-ray diffraction on Herb claim, Mount Pleasant, and Ikuno grains indexed in orthorhombic space group Pmn21 (wurtzite-type superstructure, Table 7, pp. 680-683: Herb claim a = 7.6671(81), b = 6.4399(32), c = 6.2605(61) A; Ikuno a = 7.7050(27), b = 6.4462(14) [printed 6.4421(14) in text p. 680], c = 6.2757(26) A; Mount Pleasant a = 7.6858(101), b = 6.4395(60), c = 6.2947(23) A; Z = 2), where ordering of Cu, (Fe,Zn), and (Sn,In) lowers the symmetry from the hexagonal P63mc wurtzite subcell. No full atomic- coordinate refinement was performed in the 1989 study, and the compositional and structural boundary between Sn-dominant orthorhombic petrukite and indium-rich sakuraiite remained open to further single-crystal investigation. Distinct from sakuraiite, ferrokësterite, kësterite, stannite, and elemental indium or tin; no criticality designation, microbial mechanism, or extraction yield is asserted.

Explore across X-Mech: MediaIngredientMech · CultureMech · CommunityMech · HabitatMech · TraitMech · CMMMech Network Graph

Identifiers & Classification

System Identifier Label
IMA IMA:1985-052 Petrukite

Sources & References

  1. ima_2026_09: IMA-CNMNC, The New IMA List of Minerals, September 2026, PDF page 170, Petrukite row: formula (Cu,Ag)2(Fe,Zn)(Sn,In)S4, status A, IMA No. 1985-052, country Canada / Japan, reference Canadian Mineralogist 27 (1989), 673; column definitions on PDF page 1.
    https://cnmnc.units.it/files/editor/IMA_Master_List_(2026-09).pdf (accessed 2026-10-18)
  2. kissin_owens_1989: Kissin SA, Owens DR (1989), The relatives of stannite in the light of new data, Canadian Mineralogist 27:673-688. Complete 16-page primary PDF visually inspected: petrukite occurrence and cotypes GSC 65049-65052 at Herb claim, Mount Pleasant, and Ikuno mine pp. 679-684; reflectance Table 3 p. 679; electron-microprobe analyses Table 5 p. 682; precession and powder XRD in orthorhombic space group Pmn21 Table 7 pp. 680-683; compositional and structural comparison with sakuraiite pp. 683-686.
    https://www.rruff.net/doclib/cm/vol27/CM27_673.pdf (accessed 2026-10-18)

Curation History

Timestamp Curator Action Summary
2026-10-19T05:22:00Z antigravity CREATE Created petrukite mineral record from the September 2026 IMA master list and complete 1989 primary description across Herb claim, Mount Pleasant, and Ikuno co-type localities, preserving solid-solution and Pmn21 superstructure boundaries.

Record source: data/records/petrukite.yaml