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Mohrite
(NH4)2Fe(SO4)2 · 6 H2O

     Mohrite, a member of the picromerite group, is a new species for MSH, recently analysed by microprobe and Xray at the Canadian Museum of Nature. It occurs as minute specks on pyrite.

PHYSICAL CHARACTERISTICS:

Color is orange yellow.
Luster is vitreous.
Diaphaneity is transparent.
Crystal System is monoclinic; P21/a.
Crystal Habits include minute specks on pyrite.
Cleavage {102} perfect and {010} distinct.
Fracture is (??).
Hardness is 2.
Specific Gravity is approximately 1.86 g/cm3.
Streak is white.
Associated Minerals include albite and pyrite.
Distinguishing Features: .
Origin: Named in 1964 for Karl Friedrich Mohr (1806-1879),
   German analytical chemist.

CLASSIFICATION:

Dana System
# 29.3.7.1

Strunz Classification
# VI/C.19-50

REFERENCES:
Dana 8:588 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
--

AP
--

MX
--

SS
--

MC
--

HF
--

BR
--

SX
--

FR
--

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