IMA mineral species
Perhamite
Ca₃Al₇.₇Si₃P₄O₂₃.₅(OH)₁₄.₁ · 8H₂O
Calcium aluminum silico-phosphate mineral.
Properties
🔷 Trigonal✏️ streak white
| Chemical formula | Ca₃Al₇.₇Si₃P₄O₂₃.₅(OH)₁₄.₁ · 8H₂O |
|---|---|
| Elements | Ca, Al, Si, P, O, H |
| Crystal system | Trigonal |
| Mohs hardness | — |
| Density | — |
| Streak | white |
| Color | — |
| IMA symbol | Phm |
| Nickel–Strunz class | 8.DO.20 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Newry, United States · Dunton Gem quarry, United States
- 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
- Perhamite on Mindat.org
- Wikipedia article
- Wikidata item Q948632 (source of this page's data – you can correct it there)
IMA mineral species
Trigonal
OrangeBrownWhite & Clear