IMA mineral species

Hielscherite

Ca₆Si₂[(SO₄)₂(SO₃)₂(OH)₁₂]·22H₂O

Sulfate mineral.

Hielscherite specimen — Hielscherite Graulai AR 3mm-5.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formula	Ca₆Si₂[(SO₄)₂(SO₃)₂(OH)₁₂]·22H₂O
Elements	Ca, Si, S, O, H
Crystal system	Hexagonal
Mohs hardness	—
Density	—
Streak	—
Color	—
IMA symbol	Hsc

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

🌍 Where it's found

Type locality (where it was first described): Graulay, Germany

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.

Learn more

Hielscherite on Mindat.org
Wikidata item Q19841425 (source of this page's data – you can correct it there)