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A comment on Chinese Tokamak reaches over 100M degrees. Parent comment

Re:Chinese Tokamak reaches over 100M degrees by DennisP on Sunday November 18, 2018 @02:35PM (#18482096)
We don't produce much beryllium because we use need much. It's about a fourth as prevalent in the Earth's crust as boron, for example.

http://periodictable.com/Properties/A/CrustAbundance.al.html

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Re:Chinese Tokamak reaches over 100M degrees by pfdietz on Monday November 19, 2018 @06:09PM (#18490559)
Boron, however, is more easily concentrated (in evaporites). Beryllium is found in pegmatites, which are less common. The estimated resource (not reserve) of Be is 100,000 tons (USGS). This would be enough for ARC reactors supplying just 1% of current world primary energy demand. The estimated world resource of boron is in excess of 1 billion tons.

https://minerals.usgs.gov/minerals/pubs/commodity/beryllium/... https://minerals.usgs.gov/minerals/pubs/commodity/boron/mcs-...

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Re:Chinese Tokamak reaches over 100M degrees by pfdietz on Monday November 19, 2018 @08:22PM (#18491190)
Correction: the deposits are mostly volcanogenic, not pegmatitic. However, they still aren't very common.
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