Gypsum forms concretions of selenite blades called desert roses or sand roses, growing in sediments that are subjected to concentrated brines.
Gypsum forms concretions of selenite blades called desert roses or sand roses, growing in sediments that are subjected to concentrated brines.
A. Lincoln Sherk MD collected 11/12/1939
Location: Angola 1, Sibindi, Cercle Nioro Do Sahel, Kayes Region, Mali
Apple Green Calcite. Each piece is approx. 2"" x 2"" x 1"". Calcite is truly one of the best collection type minerals.
This fossil is amazing. The color and condition are spectacular, as is the patterns in the specimen.
An actual leaf is covered with liquid metal that burns off the membrane of the leaf, but leaves the skeleton of the leaf intact and then ...
An actual leaf is covered with liquid metal that burns off the membrane of the leaf, but leaves the skeleton of the leaf intact and then ...
Calcite Pseudo-morphed after Ikatite.
Calcite Pseudo-morphed after Ikatite.
Calcite Pseudo-morphed after Ikatite.
Calcite Pseudo-morphed after Ikatite.
