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Gersdorffite
NiAsS

     Gersdorffite has been found embedded in dark-gray, fine-grained hornfels.

PHYSICAL CHARACTERISTICS:

Color is usually silver-white to steel-gray.
Luster is metallic.
Diaphaneity is opaque.
Crystal System is isoclinic; P213.
Crystal Habits include small metallic grains.
Cleavage {001} is perfect.
Fracture is uneven.
Hardness is 5.5
Specific Gravity is approximately 5.9 g/cm3.
Streak is gray-black.
Associated Minerals include calcite and löllingite.
Distinguishing Features: Color and luster.
Origin: Named in 1843 for Johann von Gersdorff (1781-1849),
   owner of the nickel mine at Schladming, Styria, Austria where
   the mineral was discovered.

CLASSIFICATION:

Dana System
# 2.12.3.2

Strunz Classification
# II/D.18-20

REFERENCES:
MinRec 21:312 (1990), Dana 8:125 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
--

AP
--

MX
--

SS
--

MC
¤¤

HF
--

BR
--

SX
--

FR
--

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