Your Artstor image groups were copied to Workspace. The Artstor website will be retired on Aug 1st. The Journal of Geology Vol. 5, No. 7, Oct. - Nov., 1897 Studies on the So-Called Porphyritic Gne ...

Witness the majestic peaks of Mount Jade in Taiwan's Yushan National Park, the cascading beauty of Tumpak Sewu Waterfall in East Java, the otherworldly Porphyritic Granite Stones of Perak ...

The Surebet discovery has exceptional continuity and excellent metallurgy with gold recoveries of 92.2% with 48.8% of it as free gold from gravity alone at a 327-micrometer crush (no cyanide required ...