Gabbro
Coarse gabbro, extracted from the southern dike of two east-west dikes N of Deldardo Creek.
Hand Sample:
Evenly distributed dark, light, and white colored coarse-grained (1 mm) crystals. Obvious traces of oxidation from some metallic mineral on each surface of the rock.
no date
Western Minerals Inc.
PH-9
Gabbro
Dark gabbro dike separating ijolite and uncompahgrite
no date
Western Minerals Inc.
PH-18
Gabbro
Gabbro with hydrothermal "oceanic" processes and prehnite-pumpellyite metamorphic overprint.
Plagioclase, clinopyroxene, olivine, ilmenite. metamorphic paragenesis: albite, sericite, chlorite, hematite, sphene, carbonates. Well-preserved relics of pyroxene, sometimes with traces of recrystallization in "oceanic" conditions of high temp. Plagioclase nearly complete saussuritized, only rarely with preserved relics; olivine substituted by chlorite, hematire, carbonates.
no date
Western Minerals Inc.
NAO-15
Gabbro
contains clots of black spheroids
Western Minerals, Inc,
BKM-18
Gabbro
Fedlspar is cream-pink colored and much has been altered to sericite/epidote
Geoscience Service & Supplies
SE-32
Gabbro
Rock may have undergone some alteration
Geoscience Service & Supplies
SE-33
Gabbro
Amphibole, epidote, chlorite, quartz, calcite, and clinozosite present are thought to be alteration products
Geoscience Service & Supplies
SE-34
Gabbro
Rock appears to be hydrothermally altered, sample is taken from a sill and is source of basaltic tuffs in area
Geoscience Service & Supplies
SE-35
Gabbro
Rock has been subjected to alteration and shear forces, the garnet present is probably an alteration product
Geoscience Service & Supplies
SE-37
Gabbro
Leucocratic, orthorhombic pryoxenes abundant
Western Minerals, Inc.
SW-17