Mineraloid (Mineralogy 💎)
A mineraloid is a naturally occurring substance that resembles a mineral, but does not demonstrate the crystallinity of a mineral. Mineraloid substances possess chemical compositions that vary beyond the generally accepted ranges for specific minerals, for example, obsidian is an amorphous glass and not a true crystal; lignite is derived from the decay of wood under extreme pressure underground; and ...
#Calcite contributes to some of my absolute favorite #geological structures, and a big part of me wants to vote for it.
But the #mineraloid-appreciating #shitstirring part of me wants #mercury.
#mincup23
https://www.mineralcup.org/2023/campaigns/campaigns/campaigns/round-2-match-5
It’s a legendary pair of minerals with a unique set of properties: quicksilver Mercury that tests the definition of a mineral, and double-refracting effervescent Calcite. One is found within thermometers, the other can be used to track the temperatures of ancient seas. Which will rise to the occasio
Planetary Ecologist
Lascivus Uncia
chrysocyonxbrachyurus(he/wolf)
geographile