Properties
🔷 Monoclinic✏️ streak white
| Chemical formula | CaZn(SiO₄) * H₂O |
|---|---|
| Elements | Ca, Zn, Si, O, H |
| Crystal system | Monoclinic |
| Mohs hardness | — |
| Density | — |
| Streak | white |
| Color | — |
| IMA symbol | Cnh |
| Nickel–Strunz class | 9.AE.30 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
✺ Glows under UV
| Shortwave UV (~254 nm) | Bright orange |
|---|---|
| Phosphorescence (afterglow) | Orange phosphorescence |
Found only at Franklin, New Jersey.
Reactions vary by locality and specimen; many specimens of a fluorescent species do not glow. Shortwave UV can burn skin and damage eyes. Wear UV-blocking glasses, and never look into any UV lamp. Sources: Franklin Mineral Museum fluorescent mineral checklist. More UV-reactive stones →
🌍 Where it's found
Type locality (where it was first described): Franklin, 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
- Clinohedrite on Mindat.org
- Wikipedia article
- Wikidata item Q3680786 (source of this page's data – you can correct it there)
IMA mineral species
Monoclinic
PurplePinkBrownWhite & Clear
ShortwavePhosphorescentUV reactive