Gabbro HS

Gabbro Hand Sample Photos. Click on any photo for a larger image. Some of the larger images may be on other web sites and will open in a new window.

Cpx-Rich Gabbro Hand Sample

gbrhs_001. Clinopyroxene-rich gabbro from the the Stillwater Igneous Complex, Montana. Dark green and brown clinopyroxene and grayish white plagioclase feldspar. Located in the Ultramafic zone of the complex.



Plag-Rich Gabbro Hand Sample

gbrhs_002. Plagioclase-rich gabbro from the the Stillwater Igneous Complex, Montana. Composed mainly of grayish white plagioclase feldspar and green clinopyroxene. Orthopyroxene and olivine are both present in small amounts. Located in the Ultramafic zone of the complex.



Bushveld Gabbro Hand Sample

gbrhs_003. Chromite-rich gabbro from the Bushveld Igneous Complex, South Africa - Smith College, Mark Brandriss Collection (BV-108).



Gabbro Hand Sample

gbrhs_004. Chilled gabbro from the the Stillwater Igneous Complex, Montana - Smith College Collection. Composed mainly of dark green to black clinopyroxene and grayish white plagioclase feldspar. Located in the Basal zone of the complex.



Pegmatitic Gabbro Hand Sample

gbrhs_005. Pegmatitic gabbro from the the Stillwater Igneous Complex, Montana. Grayish white plagioclase feldspar and dark green clinopyroxene with a pegmatitic texture. Located in the Ultramafic zone of the complex.



Pegmatitic Gabbro Hand Sample

gbrhs_006. Fluxion Gabbro, Ardnamurchan, Scotland. Dark augite and white plagioclase are visible. The sample is approximately 8 cm across. Image from the UK Virtual Microscope.