|Lazard Cahn 1865-1940|
In pucherite, the positively charged bismuth (3+) is outside of the tetrahedron and neutralizes the vanadate ion.
The phosphates [PO4 - - -] and the arsenates [AsO4- - -] ions are of similar size, have the same 3- oxidation state, and often replace and substitute for each other. Of the three groups, the vanadates are by far the rarest with only carnotite (hydrated potassium uranyl vanadate) and vanadinite (lead chlorite vanadate) being recognizable and somewhat common minerals.
|Photomicrographs of submillimeter crystals of pucherite. Width FOV, from top down, 1.0 cm, 1.1 cm, 1.4 cm, 5 mm.|
|Serpentine, chrysotile?, Big Timber, Montana. Width of specimen 7.0 cm.|
|Photomicrographs of above specimen showing "stripes" (each 1 mm or less) of white asbestos fibers.|
But, I have not solved the location of the Big Timber locality info.
|Cripple Creek mining leftovers.|
ADDENDUM: This is a great time of year , especially in area where one can experience yellow leaves and snow within a 24 hour period. On October 9 I woke up knowing this was the day for magic. I grabbed a couple of bottles of water, jumped (well more likely boosted myself) in my pickup and headed up the mountains to my favorite small breakfast joint where I beefed up on a giant omelet and hot coffee. It was then off to Cripple Creek and then back to the Springs via a back (and rough) road road that was built on the bed of the former Colorado Springs and Cripple Creek Railroad. This winding railroad carried ores from the cripple Creek and Victor mines to the reduction mills in west Colorado Springs. The road offers gorgeous views of the south flank of Pikes Peak. The temperature was around 80 degrees.
|The Cathedrals on the south flank of Pikes Peak.|
|A remaining tunnel on the railroad roadbed.|