NaSi13(OH) · 4H
Magadiite is a very rare mineral at MSH.
Color is usually white.
Luster is dull to vitreous.
Diaphaneity is translucent.
Crystal System is monoclinic;
Crystal Habits include powdery aggregates.
Fracture is (??).
Hardness is (??).
Specific Gravity is approximately 2.25 g/cm
Streak is white.
Associated Minerals include apophyllite group, bavenite, pectolite,
phlogopite, quartz and thaumasite.
Distinguishing Features: difficult to powdery nature.
Origin: Named in 1967 after its discovery locality, near Lake Magadi
MinRec 21:321 (1990), Dana 8:1717-1718 (1997)
DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE: