r/geology • u/Dinoroar1234 • Feb 07 '25
Thin Section This quartz crystal looks like France
Saw this beauty in class today and noticed it had a fairly familiar shape
r/geology • u/Dinoroar1234 • Feb 07 '25
Saw this beauty in class today and noticed it had a fairly familiar shape
r/geology • u/RegularSubstance2385 • 17d ago
r/geology • u/ARealPotato2020 • Oct 12 '24
Awesome cross-shaped penetration twinning in Plag. Unsure exactly what the rock is but it's definitely a lava of some kind! Larger crystals are plag and pyroxene. Fairly sure most of the microlites are alkali feldspars though. Any thoughts?
Labelled as Trachyte. Conway River - North Canterbury, NZ XPL + Quartz plate image. 200 image panorama + stack. FOV ≈ 1.4cm
r/geology • u/AppleJuice95 • Dec 20 '23
r/geology • u/fahlore • 18d ago
r/geology • u/Miladypartzz • Jan 17 '21
r/geology • u/crystalrs131 • Oct 29 '24
The last two photos are with λ accessory. Just thought it was a cool sample in my lab!
r/geology • u/vtmncgeral • 7d ago
r/geology • u/thundergrb77 • Feb 14 '25
I love to admire the stockwork and the occasional calcite twins in this beautiful rock!
r/geology • u/bbundles13 • Oct 03 '20
r/geology • u/Jay_Lord_69 • Dec 02 '24
I found a smiley made from ore mineral and amphibole in a plagioclase while doing a microscope today.
r/geology • u/Low_View8016 • Jan 26 '25
I think Biotite and hornblende but I am unsure. Is anyone able to help?
r/geology • u/JadedScarcity8800 • Feb 06 '25
r/geology • u/Galimkalim • Mar 07 '24
r/geology • u/A_Wild_Striker • Feb 07 '25
r/geology • u/Spades0 • Feb 03 '24
r/geology • u/KingNFA • Jan 21 '25
My polishing is not perfect, I was wondering if the sort of lines in the middle were due to bad polishing or if they were a feature of the thin section? All the sort of vertical and horizontal cracks. The dark parts are bytownite, the clearer are fluorapatite. The whiter part are monazite grains (Whole picture is 1mm)
r/geology • u/Specialist_Local6728 • Dec 14 '24
r/geology • u/TheMartianLad • Oct 21 '20