Views
3 years ago

Weathering and soil Chemical weathering - Colorado School of Mines

Weathering and soil Chemical weathering - Colorado School of Mines

Chemical Weathering of FeldsparPotassium feldspar hydrogen ion water4KAlSi 3 O8 + H + + 2H 2 OPotassium ion kaolinite silica4K + + Al 4 Si 4 O 10 (OH) 8 + 8SiO 2KaoliniteChemical Weathering of Mafic Minerals• The chemical weathering of mafic (darkcolored) minerals like pyroxenes,amphiboles, biotite, etc. (all contain Fe+/- Mg) releases iron which can thenform iron oxide (Fe 2+ O) and goethite(Fe 3+ )(OH).• These minerals give the weathered rocka red (“rusty”) color.KsparThe reaction of carbonic acid with groundwater and feldspar is acommon weathering reaction in most temperate climates (as inColorado).Typical “Fresh”Igneous Rock50%quartz33%K-feldspar17% FeSilicatesProducts ofWeatheringpore spaceor loss tosolution75%quartz17% clay8% RustMechanical Weathering• Forces act to break rock apart withoutchemically altering it.–Impact3

Mineral Weathering - Rock to Regolith Weathering = the chemical ...
Writing Matters - Mines Magazine - Colorado School of Mines
MonC - Mines Magazine - Colorado School of Mines
Mineral Weathering in Loch Vale - Colorado
It Starts With Mining - Colorado Mining Association
Mines Magazine - Colorado School of Mines
A GUIDE TO ENDOWED FUNDS - Give To Mines - Colorado School ...
T H E M A G A Z I N - Mines Magazine - Colorado School of Mines
Mines Magazine - Colorado School of Mines
magazine may 1980 - Mines Magazine - Colorado School of Mines
2012 Annual Report to Donors - Give to Mines - Colorado School of ...
Science Standards - Colorado School of Mines
And The jobs! - Colorado Mining Association
mines magazine dec 1980 - Colorado School of Mines
Mines Magazine - Colorado School of Mines
Mines Magazine - Colorado School of Mines
South African Mineral and Mining Chemicals Market - Growth ...
MOVING MINES FORWARD - Give to Mines - Colorado School of ...
Energy Alternatives - Mines Magazine - Colorado School of Mines
Math Standards - Colorado School of Mines
MOVING MINES FORWARD - Give to Mines - Colorado School of ...
Momentum - Give to Mines - Colorado School of Mines
Zeiss has a microscope for - Mines Magazine - Colorado School of ...