Yes indeed, Atlantean quartz, and more specifically Transference Crystals!

Since we are finding these crystals "still within the veins of the earth", then they undoubtedly have had the light codes of Atlantis transferred into them by the Earth Guardians of Atlantis.

Exactamoondo Guys, That's what I'm talkin' about!

It appears, as usual, the more you know the more you need to know.
The relief felt from finally identifying these crystals was all too fleeting.
Now that we know "what" they are, and their significance, we, as the excavators of these time capsules from there in situ preordained positions, seem to have been somehow chosen to bring their messages to light.
The burden of not knowing was infinitely less than the weight of the responsibility that now apparently rests on our shoulders.
We are now the curators of the keys to the past and the future!
We have seen many signs in these crystals that were trying to point us in the right direction, but were unable to accept the information and acknowledge the meaning. We must try to collect some pictures of these "signs" to commence a library of Atlantean records. To say we have to "look closer" at our finds is a ginormous understatement!