IMA mineral species

Shigaite

Mn₆Al₃(OH)₁₈[Na(H₂O)₆](SO₄)₂ * 6H₂O

Sulfate mineral.

OrangeYellowBrownBlack

Shigaite specimen
Shigaite-Rhodochrosite-201388.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaMn₆Al₃(OH)₁₈[Na(H₂O)₆](SO₄)₂ * 6H₂O
ElementsMn, Al, O, H, Na, S
Crystal systemTrigonal
Mohs hardness—
Density—
Streak—
Color—
IMA symbolSga
Nickel–Strunz class7.DD.35

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