Browse Items (5 total)

  • Title is exactly "Diabase"

DSC_1823.jpg
Holocrystalline, medium grained, anhedral, ophitic, dibastic crystals. Low silica percentage (46.3%) for a Diabase, bordering on ultramafic compostion. Calcite is present on weathered surfaces, but not on fresh surfaces. (FOV: 3.2mm)

Shows considerable fracturing, thin section examination shows ophitic texture

Ophitic texture in thin section, plagioclase exhibits some alteration to sericite

Ophitic texture in thin section, some opaques

Quarred for monumental stone, ophitic texture in thin section, minor amount of opaques
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