Mineralpedia Details for Mckelveyite-(Y)
Mckelveyite-(Y)
- Formula
- NaBa3(Ca,U)Y(CO3)6ยท3H2O
- Crystal System
- Monoclinic
- Crystal Habit
- Pyramidal
- Cleavage
- Indistinct, None, None
- Luster
- Vitreous (Glassy)
- Color
- yellow, black, greenish gray, white, gray
- Streak
- white
- Class
- Monoclinic - Domatic
- Hardness
- 3.5-4
- WebMineral
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McKelveyite-(Y) from Poudrette quarry, Mont Saint-Hilaire, Montérégie, Québec, Canada
A single, 0.75mm, yellow flaky crystal.
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Mckelveyite-(Y) from Mont Saint-Hilaire, Montérégie, Québec, Canada
Interesting yellowish crystals forming saucer-like stacked groups to 1mm in Albite and Phlogopite matrix.
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