white feldspar การใช้

• The south east has a green grey porphyry with a dacite like composition, and visible white feldspar crystals.
• The main rock type is grey to black gabbro composed of small crystals of grey-white feldspar and black pyroxene.
• Just before the 1975 tournament, the common beige sand in the bunkers was replaced with the now-signature white feldspar.