the Siglo XX mine is the only locality for Vauxite in the world
Crystals of this size from Viloco are almost impossible to find
sharpness and translucency/gemminess sitting on wonderfully contrasting brownish Limonite with golden metallic underlain Pyrite
colorless penetration twin of Augelite is sitting on sparkling micro Quartz on matrix
The quality is excellent for the species
Monazite-(Ce) with Quartz Brian Kosnar the Siglo XX mine isMonazite gets its name from the Greek word "monazein", which means "to be alone", in allusion to its isolated crystals and their rarity when first found. Monazite is usually found in granitic pegmatites, but these crystals are found in hydrothermal tin veins where there is an absolute absence of Thorium (usually a trace element in Monazite). This is a remarkable, very well crystallized, ridiculously rare, specimen consisting of sharp, lustrous,