Compendium Mineralis
mineralogic.bsky.social
Compendium Mineralis
@mineralogic.bsky.social
Systematic mineralogy is not just an obsession, it's a way of life. A gneiss guy with a head full of rocks that should not be taken for granite.
That’s a great photo.
January 14, 2025 at 7:01 PM
I just assumed that you were related to Popeye: “I'm strong to the finich, cause I eats me spinach…”
December 28, 2024 at 11:46 AM
These are excellent. Keep at it!
December 24, 2024 at 5:27 PM
The bladed crystals are rather unusual for astrophyllite from MSH. Nice photo.
December 6, 2024 at 6:20 PM
Wider view of the same location. The crystals formed from sublimation are considerably different in habit from the more familiar blocky crystals of Sicily or Maybee, Michigan, US or Conil, Spain. While relatively common as an element, its high reactivity makes native sulfur fairly rare.
December 2, 2024 at 2:56 PM
I’m only posting here now. Twitter still has areas of content that I don’t see anywhere else. And not all my colleagues have shifted, so there’s that. But as a user, I have only good things to say about BlueSky.
November 26, 2024 at 3:13 PM
Mastodon, but I found the content limited and interface unfamiliar.
November 26, 2024 at 3:10 PM
Hawaii is a rare place where one can literally watch rocks forming in a (mostly) safe manner. People ask how it smells. All the volatiles have long since left. The flow is nearly silent, save for crackling noises when rain hit the surface and causes the semi-solid surface layer to shatter. (3/3)
November 26, 2024 at 2:56 PM
It's fresh and flowing directly toward me. The finger at the bottom is only feet away when I took the photo and was inching closer. The surface is cooler and pliable. The feel when applying pressure is reminiscent of bread dough. (2/3)
November 26, 2024 at 2:54 PM
While there is disagreement about the method of formation, a biologic origin is generally favored and has been demonstrated in the laboratory. For a general review, see this article. (3/3)
www.public.asu.edu
November 25, 2024 at 3:18 PM
‘Desert Varnish’ is a loosely defined coating formed on rock outcrops, often dominated by iron and manganese oxides (e.g. birnessite) intermixed with clay minerals (e.g. corrensite), with a typical thickness less than 1mm. (2/3)
November 25, 2024 at 3:17 PM
I can tell that your priorities are correct!
November 21, 2024 at 6:15 PM