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2 votes
4 answers
7k views

Are fossil fuels really formed from fossils?

3 votes
1 answer
34 views

What is a good definition for "lattice bound" and is iron within octahedral sites of illite considered lattice bound or interstitial?

1 vote
1 answer
98 views

Does anyone know what the mineral of the year 2023 is?

11 votes
2 answers
3k views

What is the Calcite Compensation Depth and what is its significance for carbonate deposits?

4 votes
1 answer
99 views

Likely air composition in cave only accessible from underwater?

3 votes
0 answers
35 views

Does each volcano have a fingerprint?

2 votes
1 answer
393 views

Stratigraphy of limestone applied to the Great Pyramid of Giza

2 votes
2 answers
346 views

How is the difference in crust and mantle composition explained?

5 votes
2 answers
229 views

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

4 votes
1 answer
5k views

What is the difference between chalcophile and siderophile elements?

4 votes
1 answer
126 views

Why don't most organisms use magnesium in their shells and bones if it is lighter and more common than calcium?

4 votes
1 answer
167 views

Why does decreasing surface alkalinity increase surface pCO2?

4 votes
2 answers
182 views

Why are ionic bonds considered the "dominant" type in minerals?

3 votes
1 answer
152 views

What is the reason that some elastic constants are negative?

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