IMA mineral species

Sejkoraite-(Y)

Y₂[(UO₂)₈O₆(SO₄)₄(OH)₂]·26H₂O

Uranyl sulfate mineral.

Properties

Chemical formulaY₂[(UO₂)₈O₆(SO₄)₄(OH)₂]·26H₂O
ElementsY, U, O, S, H
Crystal systemTriclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolSej-Y
Nickel–Strunz class7.EC.15

“—” means no reliable value in Wikidata yet. Check Mindat for full data.

🌍 Where it's found

Type locality (where it was first described): Rovnost Mine, Czech Republic

  • Type locality
  • Notable source / deposit
  • Country of origin

Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.