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Collection: (MC) Magnet Cove Alkaline Igneous Complex -- Magnet Cove, Arkansas
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Nepheline syenite
Gray, less mafic than average
Representative of main rock type in quarry
Syenite
Coarse grained, comes from dike-like body in northern part of the quarry
Phonolite breccia
Altered
Jacupirangite
Coarse, muddy, with many small glinting faces
Hornfels
From within visible biotite zone
Garnet psuedoleucite syenite
Not as messy as garnet psuedolucite syenite at Diamond Joe Quarry
Garnet syenite
Not dark phonolite facies
Garnet nepheline syenite
Coarse, with white veins and orange coloration
Garnet ijolite
Deep brown oxidation with yellow (limonite?) area
Nepheline syenite pegmatite
Mostly light colored with small darker bits
Hornblende-garnet nepheline pegmatite
Coarse-grained
Trachy phonolite
Dark, finer-grained
Carbonatite
Vageuly translucent
Sphene nepheline syenite
Rough with oxidized section
Ijolite
Fine grained, collected from large boulder
Trachyte
Light gray
Sodalite trachyte
Representative of rocks throughout a line outcrop at the edge of creek
Feldspathoidal leuco-syenite
Rough, gray
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