hardrock Definition

anorthosite, wollastonite, lode, metallogenic, gossan, pyroxenite, mineral, lateritic, metalliferous, igneous rock, unmined, auriferous, chromite, dunite, lithology, actinolite, eluvial, bastnasite, orogenic, colluvium, surficial, catface, chalcedony, mining, placer mining, sericite, hypogene, chloritic, scheelite, eclogite, stibnite, diabase, minable, allanite, silicic, alum shale, greisen, dolomites, greywacke, alunite, overlie, pegmatite, barite, autunite, detrital, argillaceous, eudialyte, tantalite, vein quartz, batholith, biotite, argentite, hematitic, gold, saprolite, tetrahedrite, extrusive, wolframite, pluton, porphyritic, pyritic, galena, anomalism, acari, pyrophyllite, albite, kaolinite, outwash, carnotite, nepheline, adularia, bonete, lower carboniferous, argentiferous, tailings, plagioclase, chrysocolla, enargite, haematite, muscovite, metamorphic rock, mistassini, covellite, syenite, dacitic, siliceous, hornblende, amphibole, cretaceous, ankerite, clastic, ymir, pyrochlore, lamprophyre, schist, carnallite, gneissic, alluvial, diorite, claystone,