gbrnorhs_001. Gabbronorite from the Stillwater Igneous Complex, Montana. Dark brown enstatite and black clinopyroxene with grayish white interstitial plagioclase feldspar. Smith College Collection (SIC-3).

gbrnorhs_002. Gabbronorite from the Bushveld Igneous Complex, South Africa. Greenish brown enstatite and dark green clinopyroxene surrounded by grayish white plagioclase feldspar. Approximate height in layered sequence 2100 meters. Mark Brandriss Collection, Smith College (BV-107).

gbrnorhs_003. Gabbronorite from the Bushveld Igneous Complex, South Africa. Dark brown enstatite and dark green clinopyroxene surrounded by grayish white plagioclase feldspar. Approximate height in layered sequence 6090 meters. Mark Brandriss Collection, Smith College (BV-204).

gbrnorhs_004. Gabbronorite from the Bushveld Igneous Complex, South Africa. Dark brown bronzite and dark green augite surrounded by grayish white plagioclase feldspar. Approximate height in layered sequence 6550 meters. Mark Brandriss Collection, Smith College (BV-202).

gbrnorhs_005. Gabbronorite from the Bushveld Igneous Complex, South Africa - Mark Brandriss Collection, Smith College (BV-203). Dark orthopyroxene and augite surrounded by grayish white plagioclase feldspar. Approximate height in layered sequence is part of the "Marginal Zone".

gbrnorhs_006. Plagioclase-rich gabbronorite from the Stillwater Igneous Complex, Montana. White plagioclase feldspar with dark augite and orthopyroxene. Smith College Collection (SIC-12).

gbrnorhs_007. Gabbronorite from the Bushveld Igneous Complex, South Africa - Mark Brandriss Collection, Smith College (BV-014). Orthopyroxene and augite surrounded by grayish white plagioclase feldspar. Approximate height in layered sequence is 5600 meters.