IMA mineral species
Joesmithite
PbCa₂(Mg₃Fe³⁺₂)(Be₂Si₆)O₂₂(OH)₂
Ca-amphibole, double chain inosilicate mineral.
Properties
⛏ Mohs hardness5 – 6
💅🪙🍶🔪💎
Scratches glass; quartz scratches it.
| Chemical formula | PbCa₂(Mg₃Fe³⁺₂)(Be₂Si₆)O₂₂(OH)₂ |
|---|---|
| Elements | Pb, Ca, Mg, Fe, Be, Si, O, H |
| Crystal system | Monoclinic |
| Mohs hardness | 5 – 6 |
| Density | — |
| Streak | — |
| Color | black |
| Cleavage | {110} |
| IMA symbol | Joe |
| Nickel–Strunz class | 9.DE.10 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Långban, Sweden
- 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
- Joesmithite on Mindat.org
- Wikidata item Q3808760 (source of this page's data – you can correct it there)
IMA mineral species
5–6
Monoclinic
Black