Thumbnails
Löllingite crystal
© Douglas Merson
FeAs
Löllingite is very rare at MSH. The crystals are silvery-white when fresh, tarnishing to pale bronze and steel-gray with metallic luster.
PHYSICAL CHARACTERISTICS:
Color varies from silver white to gray. It tarnishes to pale bronze and
steel gray.
Luster is metallic.
Diaphaneity is opaque.
Crystal System is orthorhombic; Pnnm
Crystal Habits include prismatic crystals, crude elongated plates and
massive.
Cleavage {010} and {101} are sometimes distinct.
Fracture is uneven.
Hardness is 5 – 5.5.
Specific Gravity is approximately 7.3 g/cm
Streak is greyish-black.
Associated Minerals include analcime, biotite, sodalite and vesuvianite.
Distinguishing Features: prismatic habit and silvery colour.
Origin: Named in 1845 for its discovery locality of Lölling, Carinthia,
Austria.
CLASSIFICATION:
Dana System
# 2.12.2.9
Strunz Classification
# II/d.23-10
REFERENCES:
MinRec 21:319 (1990), Dana 8:122-123 (1997)
DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:
MSH
¤¤¤