IMO , the black-red " holy " stones , are fragments of quartz from the Gonzales-Haywood-Polka mine .
Burns , who traded food and supplies for gold with Apache , knew how for the Apache the gold was sacred and also the stone/quartz which surrounded it . To hide the provenance of that gold and to lure others afar from the Polka mine , Burns opened some holes around his ranch and claimed the black-red quartz came from the region surrounding his ranch . Also he played an " almost insane man " role introducing UFO and spiritual contacts in his beliefs , to blur more the waters and to left space for doubds and misinterpreting around his gold provenance .
Later , Crawford found the black-red quartz which Burns buried close to his ranch , and invented a story with an Angel on the Thunder God grounds to give value to the black-red quartz , and to attract the attention of investors and of researchers who were willind to help in the find of the black-red quartz provenance . Crawford needed men to dog barking for the mine , like LaFrance and others did for the gold bars cave . They never knew the real spot of what they were searching . Their research was based in fragments of clues , sometimes false , which they have put together in a random order .
Is not accidentally that many famous gold seekers started their quest from the Burns ranch and others still do it today's .
But ,to compare the Holy Grail concept with the black-red quartz from Gonzales mina is a big mistake and desecrate a two thousand years religion beliefs .