Green crystallized dead Russian mouse mineral thing
In geology, a pseudomorph is a mineral that takes on the shape of another mineral (or other object) by infiltration or incrustation. Petrified wood is an example, where the form of the original wood (right down to the cellular structure) has been replaced over time by minerals.
This here thing? It’s a mouse that has been partially incrusted with chalcanthite and atacamite. Where did it come from? Is it ancient? I don’t know! I found it years ago, while surfing the web for limonite pseudomorphs (for entirely personal reasons). It’s from the Fursman Mineralogical Museum in Moscow. Please to click the link and see it in its natural green.
When talk turned to Russia and Pravda and Lenin’s tomb and assorted other dead things — the internet today, for example — I naturally thought of my friend, green crystallized dead Russian mouse mineral thing.