IMA mineral species
Jennite
Ca₉Si₆O₁₆(OH)₁₀·6H₂O
Inosilicate mineral.
Properties
⛏ Mohs hardness3.5
💅🪙🍶🔪💎
A copper coin scratches it.
🔷 Triclinic✏️ streak white
| Chemical formula | Ca₉Si₆O₁₆(OH)₁₀·6H₂O |
|---|---|
| Elements | Ca, Si, O, H |
| Crystal system | Triclinic |
| Mohs hardness | 3.5 |
| Density | — |
| Streak | white |
| Color | — |
| IMA symbol | Jnn |
| Nickel–Strunz class | 9.DG.20 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 3.5: softer than a steel knife, so it scratches easily. Store it apart from harder stones.
🌍 Where it's found
Type locality (where it was first described): Crestmore quarries, United States
Learn more
- Jennite on Mindat.org
- Wikipedia article
- Wikidata item Q250280 (source of this page's data – you can correct it there)
IMA mineral species
3–4
Triclinic
White & Clear
Soft, Scratches Easily