Zebra Calcite Rough

Calcite is a rock forming mineral also known as calcium carbonate. It occurs in igneous metamorphic and sedimentary rock and is considered to be a ubiquitous mineral. 
Calcite can appear in a wide variety of colours, with some of the most vibrant varieties being found in Pakistan and Mexico.
Zebra Calcite is a relatively recent find, being discovered in 2019, and so far limited in location to Mexico only.