Igneous rock carrying with 65% or more silica
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Tag: <span>A</span>
Having a low pH caused by sulphur dioxide and nitric oxide gases, usually introduced by human industrial activity
Accumulation of sedimentary material
Minerals found alongside or in association with the primary target mineral
Areas of past geological or development work no longer maintained or not under current exploration
A machine that uses velocity to electrically charge atomic particles such as electrons, protons, deuterons, and alpha particles, or a substance added to increase chemical reaction
Water with a pH of less than 6.0 and where acidity exceeds alkalinity
Acidic water run-off from mine waste dumps and mill tailings ponds containing sulphide minerals
A pyroclastic deposit characterized by vitric binding or sintering of its minerals
A breccia composed of volcanic rock fragments