Hematite-included colorless calcite druzy Petrified wood and can be colorless to

and can be colorless to semi-translucent white with inclusions

which will fluoresce under 365nm UV light

I suspect the black mineral could be poorly-formed specularite hematite

Porcellionides pruinosis "Orange Cream" are an easy beginner's option for people nervous about getting started with isopods

when viewed from the side you see it is actually two twinned dolomite snowflakes

Hematite-included colorless calcite druzy Petrified wood and can be colorless toLocale: Santa Eulalia, Chihuahua, Mexico Approx dimensions: 4 x 3 x . 75" Approx weight: 101g This calcite specimen from Santa Eulalia is coated with well formed colorless calcite druzy, with fine red tinted hematite inclusions inside. This gives the crystals a brick red tint softened by the glittery clear surface. This specimen is a thin crust of ferrous (iron based) matrix with dusty red oxidation on the back. The front is completely covered in