IMA mineral species
Rigrahamite
Na₂Ca₂Th₂(CO₃)₄(HCO₃)₂(OH)₄(H₂O)₇
Mineral.
Properties
| Chemical formula | Na₂Ca₂Th₂(CO₃)₄(HCO₃)₂(OH)₄(H₂O)₇ |
|---|---|
| Elements | Na, Ca, Th, C, O, H |
| Crystal system | Monoclinic |
| Mohs hardness | — |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Rig |
| Nickel–Strunz class | 5.DB. |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Poudrette quarry, Canada
- 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
- Rigrahamite on Mindat.org
- Wikidata item Q137380751 (source of this page's data – you can correct it there)
IMA mineral species
Monoclinic