A dark, platy monoclinic mica with perfect cleavage K2Mg6(Si6Al2O20)(OH,F)2
A dark, platy monoclinic mica with perfect cleavage K2Mg6(Si6Al2O20)(OH,F)2
A small volcanic rock, over 64mm, formed through ejection from lava
The Weight by volume of living organisms in a given space
100 shares
Prospecting by noting characteristics of vegetation
A bluish, compacted soil strata, usually several feet thick and is often indicative of placer minerals
A rock having formed through biological means
A rough technique of assay where the target minerals are oxidized by torch and oxidation states observed
A process for recovering metals from ores using bacterial solution
Usually a deposit that contains positive target indicator minerals without itself containing target minerals