Tootfinder

Opt-in global Mastodon full text search. Join the index!

@doktrock@toad.social
2026-09-26 19:37:21

The intricate crystallography of #quartz is well described at The Quartz Page - there's more to it than one might assume! For example, each silica tetrahedron is a member of 2 threefold and 2 sixfold helices. Plus, rotational axes, etc. ⚒️🧪 #MinCup26

@doktrock@toad.social
2026-09-26 20:20:20

A cluster of #Quartz crystals from the Tucson show ⚒️🧪 #MinCup26

A cluster of light green, elongated, quartz crystals, probably 10 or so cm across, pointing in all different directions. Label says Quartz 1,500 (not sure if that's a price?) Huanggang Mine, Inner Mongolia Autonomous Region, China #02705 K
@colinpurrington@flipping.rocks
2026-09-21 21:06:55

Geology folks, is this a stain caused by iron-oxides? Shawangunk conglomerate near Mohonk Lake in New Paltz, New York. #NewYork #mohonk #geology #rocks #quartz #chemistry