GRD00FOS0

I-649

Gabbro

Precambrian › Proterozoic › Mesoproterozoic › Stenian
1000.0 - 1200.0

0

Ritter 154 › Cabinet 16 › Drawer F

polished

Polsihed slab. Feldspars are labradorite with bytownite intergrowths. Original description: Leucogabbro (bytownite-Px).

(see Elkins and Grove, Am. Mineral., 1990)

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Minnesota
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