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 ...
Mines Magazine - Colorado School of Mines
Science Standards - Colorado School of Mines
Mines Magazine - Colorado School of Mines
Mines Magazine - Colorado School of Mines
MonC - Mines Magazine - Colorado School of Mines
Zeiss has a microscope for - Mines Magazine - Colorado School of ...
Mines Magazine - Colorado School of Mines
Weathering in Soil - Natural Resource Ecology and Management
1 ^'^l^^' - Mines Magazine - Colorado School of Mines
Alumni Association - Mines Magazine - Colorado School of Mines
magazine may 1980 - Mines Magazine - Colorado School of Mines
MOVING MINES FORWARD - Give to Mines - Colorado School of ...
THE MAGAZIN - Mines Magazine - Colorado School of Mines
DR - Mines Magazine - Colorado School of Mines
Energy Alternatives - Mines Magazine - Colorado School of Mines
10 - AQWATEC - Colorado School of Mines
mines magazine dec 1980 - Colorado School of Mines
National Western Mining Conference & Exhibition - Colorado Mining ...
VOLUME XXX NO. 7 - Mines Magazine - Colorado School of Mines
• - • n i l - - Mines Magazine - Colorado School of Mines
Simple Electronic Phased Array - Colorado School of Mines