IMA mineral species

Piemontite-(Sr)

{CaSr}{Al₂Mn³⁺}(Si₂O₇)(SiO₄)O(OH)

Epidote supergroup, sorosilicate mineral.

Piemontite-(Sr) specimen
Piemontite-(Sr).jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formula{CaSr}{Al₂Mn³⁺}(Si₂O₇)(SiO₄)O(OH)
ElementsCa, Sr, Al, Mn, Si, O, H
Crystal systemMonoclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolPmt-Sr
Nickel–Strunz class9.BG.05

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

🌍 Where it's found

Type locality (where it was first described): Molinello mine, Italy · Cassagna mine, Italy

  • 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.