Space/Science — HabitableZone

Space/Science » in reply to re: What I was thinking...

Not the top o' the list...

.... but it was the first hexagonal mineral that popped into mind yesterday, and was worthy of examination. It's true there is a lack of carbonate signitures, but this is also a very small outcrop.

Ram's horn selenite also comes to mind.

Anyone have another mineral alternative?

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