12
votes
Accepted
Can I use diamonds as fossil fuel?
Diamonds are expensive. Really expensive. Even "cheap" synthetic diamonds are orders of magnitude more expensive than conventional fossil fuel. By using them as fuel, you will increase ...
- 23.3k
11
votes
Accepted
Diamond at the core of Jupiter
I would think this is questionable, though we don't have a definitive answer yet.
We usually think Jupiter has a roughly solar composition, which according to the solar abundance measurments of ...
- 3,271
8
votes
Accepted
Could diamonds be formed from coal?
Craters actually can be identified by formation of high-pressure materials such as diamonds or stishovites and coesites (varieties of shocked quartz). A good example of this is the Popigai crater in ...
- 549
7
votes
Accepted
Why do diamond mines seem to always appear conical? Are the above-ground mines all that way? All at about the same angle?
The main hard rock sources of diamonds are either kimberlites or lamproites.
Many kimberlite and lamproite deposits occur as:
carrot-shaped, vertical intrusions termed 'pipes'
As the term "carrot-...
- 25.1k
4
votes
When diamonds "migrate" from deep underground to the surface, do they maintain pressure inside when there is no more pressure outside? If so, how?
The question is in regard to pressure confining a rare, deep-mantle formed mineral visible within a diamond inclusion. The pressure on the inclusion within the diamond crystal is really the pressure ...
- 41
4
votes
Is it possible to form a diamond-sapphire hybrid?
Sapphires and ruby's are both aluminium oxide. sapphire melts at 2000 degrees and diamond synthesis can happen at 600 degrees. To coat around the sapphire, you would have to use multiple diamond seeds,...
- 1,349
3
votes
Could a great diamond deposit have been derived from the Theia event?
Well, no, due to a host of reasons:
Remember that Theia was a Mars-sized impactor. This means that the impact would have produced too much heat, enough to decompose any diamonds that would have ...
- 261
3
votes
Accepted
When diamonds "migrate" from deep underground to the surface, do they maintain pressure inside when there is no more pressure outside? If so, how?
One of the more interesting examples of diamond maintaining high pressure in its lattice is discussed in this answer from Space Exploration SE. Put briefly, Ice VII inclusions have been found in ...
- 4,041
1
vote
Can I use diamonds as fossil fuel?
Scarcity is the biggest limit, diamonds burn much like coal but unlike coal they are extremely rare.
artificial diamonds would still cost vastly more to make than digging up coal.
- 7,037
1
vote
Importance of meteorite impact craters in geology?
It's worth noting that our planet was formed by "meteorite" impacts and that our own moon is the (geologically important) result of Mars smacking into our planet, but let's focus on impacts after, say,...
- 2,813
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