Rhyolite has the hardness of 6 on Mohr's Hardness Scale. Improve answer ... Mohr's scale of hardness is used for minerals found in the earth. It basically refers . wiki.answers.com |
2 Jul 2005 ... H. (effective hardness) > 5, typically 6 - 7 S.G. ~ 2.65. Miscellany -Rhyolites that exhibit certain kinds of flow banding and/or contain spherulites ... stoneplus.cst.cmich.edu |
TYPICAL ROCK HARDNESS. Rock: Fresh Diabase (Trap) Pyroxene Quartzite Sandstone Altered Diabase Fresh Basalt Hornblende Schist Diorite Hornblende ... www.rockbreaker.com |