ursa major, explorator, exploration, lebowa, mistassini, metalline, metallogenic, silver spruce, ungava, hathor, melville peninsula, rottenstone, eluvial, tepal, copper belt, ringbolt, diamondiferous, golden star, orogen, teras, gossan, silicic, bastnasite, catface, ricinus, arkose, mineralization, anomalism, tucuma, geophysical, imz, noranda, carnotite, archean, prospecting, hypogene, lamprophyre, kimberlite, pegmatites, pyrophyllite, porphyries, carnallite, haematite, saprolite, auric, stratiform, supergene, haoma, nepheline, lineament, neocomian, panax, apella, catabasis, yukon territory, amel, athabaska, mylonite, masc, archaean, cepheid, lode, irontree, ostracod, vecture, azimut, hornfels, schists, phosphorite, aquilon, xer, douay, cherty, paleogene, stratigraphy, geological, trimox, base metal, laterite, adularia, goldfield, anticosti, tamm, copper oxide, alum shale, veinlet, petrography, sierra madre occidental, afri, gold mine, droshky, alme, eudialyte, tantalite, allanite, limonite, thrust fault, gabbro, sericite, argonauta, unconformity, wetar, obsidian, rhyolite, basalt, lava, basalts, dolerite, lavas, porphyry, pumice, trachyte, tuff, andesite, breccia, chalcedony, dacite, diabase, felspar, hornblende, phenocrysts, agglomerate

volcanic glass