8.3 Aegirine syenite. Concord, North Carolina. Brown, orange, yellow, and greenish white subhedral to anhedral alkali feldspars, with small greenish black aegirine pyroxenes, black biotite, and minor silvery black magnetite comprise the rock.

Image 22 of 156

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8.3 Aegirine syenite. Concord, North Carolina. Brown, orange, yellow, and greenish white subhedral to anhedral alkali feldspars, with small greenish black aegirine pyroxenes, black biotite, and minor silvery black magnetite comprise the rock.

8.3 Aegirine syenite. Concord, North Carolina. Brown, orange, yellow, and greenish white subhedral to anhedral alkali feldspars, with small greenish black aegirine pyroxenes, black biotite, and minor silvery black magnetite comprise the rock.

Image 22 of 156

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