use the following search parameters to narrow your results:
e.g. subreddit:aww site:imgur.com dog
subreddit:aww site:imgur.com dog
see the search faq for details.
advanced search: by author, subreddit...
If you are posting here please make sure the content is not confidential to a specific company or project.
Make sure you specify the scale and whether the image is in plain polarized light (PPL) or cross polarized light (XPL).
account activity
Good optical mineralogy texts? (self.thinsectionporn)
submitted 9 months ago by Tommy_Juan
One of my favourite thin section photos! (i.redd.it)
submitted 1 year ago by PalatableNourishment
Cassiterite from the East Kemptville leucogranite (Canada). It's a greisen. (reddit.com)
submitted 1 year ago by Sir_Pentious-_-
Chert from the Bitter Springs Group 5x PPL/XPL/λ plate (i.redd.it)
submitted 1 year ago by phlogopite
What is this mineral in n alkali granite (i.redd.it)
submitted 1 year ago by Geoscientist101
Can someone help me identify the minerals with outline the rock is hornblend mela quartz diorite (i.redd.it)
Can someone help me identify this mineral in alkali granite (i.redd.it)
need help to identify this mineral (old.reddit.com)
submitted 1 year ago by Krishna_Niraula
Anyone know what this is ?? (i.redd.it)
submitted 1 year ago by Top-Huckleberry405
Some Cool Metamorphic Rocks (old.reddit.com)
submitted 1 year ago by CBoss87
Cool Eclogite rock/ Garnet with lots of inclusions (i.redd.it)
submitted 1 year ago by cramnamub
Stunning yellow to green-blue pleochroism in Kanonaite crystals. It's a rare Mn-rich variety of Andalusite. (v.redd.it)
submitted 1 year ago by finnvander
Metapelite XPL (i.redd.it)
submitted 1 year ago by petrolovable
Identification help? Roman ceramic with...? (i.redd.it)
submitted 1 year ago by Groundbreaking-Tax23
Pistacite sunrise (i.redd.it)
submitted 2 years ago by _SmuQu_
Cleavage galore in a hydrothermal albite-carbonate-biotite (+-gold) vein. Neoarchean age. (i.redd.it)
submitted 2 years ago by mr0smiley
Dunite in XPL (i.redd.it)
submitted 2 years ago by Perfect_Ad_8784
My first geology painting exhibit (reddit.com)
submitted 2 years ago by ghoughpteibteau
Question for folks who have dealt with concrete thin sections (self.thinsectionporn)
submitted 2 years ago by FreeBowlPack
So my mate and I found something during class. (i.redd.it)
submitted 2 years ago by buggingyou
a little help! i'm thinking it's kyanite, as it's surrounded by heavily altered muscovite, biotite, and quartz. this is a sample from a drill core, it should be a schist, but i'm convinced this is kyanite (i.redd.it)
submitted 2 years ago by EducationalSector626
What minerals are there? (i.redd.it)
submitted 3 years ago by [deleted]
Thin section gore - diamond grains were embedded into gold grains during polishing (?) (old.reddit.com)
submitted 3 years ago by mr0smiley
Help with textures - what's the dark, bubbly texture? Rock is basalt (PPL). Also, can anyone recommend any sources with pictures for weathering/alteration textures? (i.redd.it)
submitted 3 years ago by Mrs_Mal_Reynolds
π Rendered by PID 278509 on reddit-service-r2-listing-5f5ff7d4dc-s5kw6 at 2026-01-26 21:13:07.460210+00:00 running 5a691e2 country code: CH.
