u/sonoran7

Just another rock from San Juan County, Utah. 55 K CpM

From a mine between Deer Flat and Elk Ridge. Adit is flooded and closed. 231 K CpM

Old material from the remote ore dump.

One of very few bits of rock from the Big Red #2 Mine, on Elk Ridge, San Juan County, Utah. The adit is collapsed, the tailings rest at an angle of critical repose, and the hike is short and almost vertical. Truly a 'Once and Done'. The dark UO2 yields 54 K CpM

284 grams of Chalcocite, Chalcopyrite, and UO2 from Red Canyon, Utah 172 K CpM

Skeletogenous petrified wood 600 CpM

Old material 190K CpM Red Canyon, Utah

Malachite, Uranophane, Sandstone, Limonite. The black area is organic material, replaced by Chalcopyrite and UO2 (Pet. wood). 71K CpM

This 'flake' is 50mm across and only 3mm thick. 90K CpM Old material from the Blue Lizard Mine.

14.5 cm spread

First image is of UO2 and Chalcopyrite in Sandstone, with Malachite covering the replaced wood.

Second image is UO2, Chalcopyrite, Sandstone, and Malachite, with Malachite covering the replaced wood in the upper half.

Third image is UO2, Sandstone, Uranophane, Jarosite, and Gypsum, with the replaced wood in the lower portion.

Old material, and all from the same mine in San Juan County, Utah.

Mines represented are: Giveway-Simplot, Sandy #3, Radium King East Workings, Posey, Joe Bishop, Markey, and Spook-Dee Coleman

Only one spot on this 18 cm rock reads over 100 K CpM (a,b,g) Old material from the

Spook Dee-Coleman Mine, Utah

This piece is 25 cm wide. 6,890 gms. Most radioactive spot: 265 K CpM This is a classic example of the loci of deposition/reduction found in ancient stream channels on the Colorado Plateau. Where an ancient channel changed direction, lighter, finer material was washed out. The remainers were pebbles, and water logged organic material. Much later, as Uranium laden groundwater filtered through, the reduction from +6 charged U to +4 charge caused the replacement of organic material by Uranium. This reduction/replacement also left Copper minerals. Here we see that Copper mineralization followed by oxidation, as the green Malachite.

These are part of a suite of rocks that came from an old U mine. The visible host material is Jarosite-stained Sandstone. The green is Malachite, and yellow is Natrozippeite. The first two pieces fell apart during excavation. 60mm wide, and 100K CpM. The last piece-115mm- shows Gypsum and UO2 along with the Malachite and Natrozippeite. 200 K CpM.