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Collection: (SW) Stillwater Complex -- Montana
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SW Suite PDF
Cordierite hornfels
Hornfels w/ massive sulfides
Quartz monzonite pluton
Sample is not representative of whole body -- there are coarser and finer samples
Chromite and olivine
From olivine layer of a typical chromite repeat sequence
Olivine cumulate layer
Bronzite
Bronzite w/ olivine oichocrysts
Anorthosite w/ pyroxene oichocrysts
Norite
Sulfides in troctolite
Anorthosite
Fine-banded, most of the bands are several inches wide and alternate light-dark
Troctolite
No associated sulfides
Troctolite
Anorthosites
Many have large dark mineral clusters
Norite
Especially dark (not typical)
Norite
Leucocratic
Gabbro
Leucocratic, orthorhombic pryoxenes abundant
Bronzitite
Contains large augite crystals
Mafic crystals
Very coarse
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