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4 votes
2 answers
134 views

Why is there gold in the earth's crust?

11 votes
2 answers
208 views

What oxidised the soil on Mars?

13 votes
3 answers
5k views

What is the white coating "patina" we often see on deposited chalcedony/agate?

5 votes
2 answers
88 views

Why does calcium occur together with felsic rocks and magnesium with mafic rocks if calcium is denser than magnesium?

0 votes
2 answers
34 views

Does granite and basalt behave differently in different atmospheric pressures?

2 votes
2 answers
98 views

How do I convert an element measurement to oxides?

26 votes
2 answers
3k views

Why does phosphate rock contain uranium?

43 votes
2 answers
12k views

Why is NaCl so hyper abundant in the ocean?

4 votes
0 answers
26 views

Reason for finding low boron levels in clayey soil with high organic matter?

3 votes
0 answers
42 views

Causes of high calcium levels in sandy alluvial soils

3 votes
1 answer
50 views

Why does decreasing surface alkalinity increase surface pCO2?

2 votes
0 answers
16 views

Searching for Geochemical Threshold for PTE's of Spain

15 votes
1 answer
721 views

Does the heating of the oceans due to greenhouse effect negate the acidification due to increased CO2 levels?

2 votes
0 answers
34 views

Under which conditions would you see the MOST lake effect precipitation?

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