Granitic pegmatites Formation and mining Presented by Mark Jacobson, Retired Chevron Corporation

[@canadiangemstones7636]

An excellent talk!!!

[@SenorTucano]

Great video - very enlightening

[@NightFlightAM]

Excellent lecture & presentation. Thank you so much!

[@jdean1851]

THANX FOR POSTING! OUTSTANDING INFO!

[@jwt242]

Completely agree; informative and extremely interesting..

[@hesawthebestinyou.8051]

The cesium ore, does it cut easily if you carry it with bare hands?

[@alexdrockhound9497]

I love pegmatites

[@dannedifyoudo]

Question---if you come across a granitic pegmatite, what are the things to look for that guide you to a "pocket"? Or guide you to large precious crystals? Larger grains? More garnets? Can you tell from it ringing hollow when you hit the rock with your hammer? The best part is at the border of the quartz center?

[@alexdrockhound9497]

It's kind of random luck. But look for where veins of pegmatite intersect, that often helps. Bigger pegmatite zones tend to be more likely to have pockets.

[@Rockhounding-with-Bigfoot]

I can promote this video on my rockhound group if you would like (over 600 active members)

[@amineser-sf8zn]

Les nombreuses recherches dans Les regions de champs pegmatitiques occupant Sur Les deux continents un espace de plusieurs milliers de kilometres montant une altitude de quelques miles metres ont permits de verifier et d argumenter Les bases theoriques de comprehension actually de processus pegmatitiques au sein de la croute terrestre

[@Rockhounding-with-Bigfoot]

This video is like crack to me!