This very interesting specimen is called Mottramite. It is one of the few minerals that has botryoidal formations (rounded, ball like shape). This mineral looks likes soft, like moss. It may not have the brightest colors, but when you start looking at this mineral, it has something special that draws you in! Location: Mexico. Dimensions: 2.23" x 1.67" x 0.47". Weight: 29.7 grams. Sku: 14S571.