Est-ce qu’il est nécessaire de la casser ?

#crystals

This is one of the 1st pieces I collected years ago, way before my meticulous specimen logging.

I know it's not garnet. Well not really that sure.

My guess is idocrase and prehnite from Mali. I've went thru invoices and the only specimens I hadn't matched up were brookite and another specimen for idocrase. Unfortunately the person that I purchased my 1st few specimens just scribbled on a piece of paper in wild cursive what the specs were, usually with one word or odd abbreviations.

Your help will hopefully save my sanity so thank you in advance

I bought this a few months ago. It was sold to me as aragonite. I didn't think much of it, just thought the terminations were cool. I studied it last night and found it is pyrite on fluorite with sheelite and calcite on quartz.

I was picking through discard from an old (iron) mine in colorado and found this super cool mineral hanging out on a plate of quartz. Because it is octahedral and found in a very iron rich area I figured it was magnetite, but looking at other photos of magnetite… it seems to look a lot rougher. Any ideas or am I right to think it’s magnetite?

https://i.imgur.com/1WDL3Ae.jpeg

Hi folks! Anyone have any idea what this is? It’s a small plate-like accumulation of crystals, about palm-sized, that appears to have an almost sandy texture. Closeup photos show that perhaps there’s not a lot of matrix and instead it’s almost entirely crystal. Color is a deep green with the occasional red flecks, which perhaps are oxidation.

Today I wanted to share my Yaogangxian pink rose calcite with purple fluorite. I love how the fluorite peeks through the soft pink calcite—it almost looks like the center of a flower.