(Ca,Na)(Zr,Ti,Nb)Si
Rosenbuschite is an extremely rare accessory mineral at MSH.
PHYSICAL CHARACTERISTICS:
Color is usually pale yellow to beige.
Luster is vitreous.
Diaphaneity is translucent to opaque.
Crystal System is triclinic; 1.
Crystal Habits include acicular crystals to 3mm forming divergent sprays.
Cleavage {010} is perfect (not readily apparent).
Fracture is uneven.
Hardness is 5 – 6.
Specific Gravity is approximately 3.3 g/cm
Streak is white.
Associated Minerals include aegirine, analcime, burbankite, calcite,
natrolite, paranatrolite, wöhlerite and zircon.
Distinguishing Features: Crystal habit and color.
Origin: Named in 1887 for Karl Harry F. Rosenbusch (1836-1914),
German professor of mineralogy.
CLASSIFICATION:
Dana System
# 56.2.4.8
Strunz Classification
# VIII/C.13-10
REFERENCES:
MinRec 21:333 (1990), Dana 8:1165 (1997)
DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:
MSH
¤¤¤