IMA mineral species ✺ Glows under UV
Meionite
(Ca,Na)₄(Si,Al)₁₂O₂₄(CO₃,SO₄,Cl)
Tectosilicate mineral.
Properties
| Chemical formula | (Ca,Na)₄(Si,Al)₁₂O₂₄(CO₃,SO₄,Cl) |
|---|---|
| Elements | Ca, Na, Si, Al, O, C, S, Cl |
| Crystal system | — |
| Mohs hardness | — |
| Density | — |
| Streak | white |
| Color | — |
| IMA symbol | Me |
| Nickel–Strunz class | 9.FB.15 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
✺ Glows under UV
| Longwave UV (~365 nm) | Orange-yellow |
|---|---|
| Midwave UV (~310 nm) | Pinkish red or orange-yellow |
| Shortwave UV (~254 nm) | Pinkish red or orange-yellow |
Meionite is a calcium-rich scapolite. These responses are for Franklin-area material.
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): Mount Somma, Italy
- 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
- Meionite on Mindat.org
- Wikipedia article
- Wikidata item Q942404 (source of this page's data – you can correct it there)
IMA mineral species
OrangeYellowBluePurplePinkBrownGrayWhite & Clear
LongwaveMidwaveShortwaveUV reactive