A friendly reminder that my colleague Robin Rohrback and I have assembled a huge online "virtual sand" collection (GigaPan/GIGAmacro) that you can explore. Links to >180 samples in this Google sheet: docs.google.com/spreadsheets... ⚒️

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it's great that many (most?) of these have the pixels/inch info — somebody more clever than me could likely write some code that fed these into a segmentation (or other image-analysis) algorithm to generate grain-size distributions — thanks for sharing this resource!

Would you like some foraminiferal sand from the west coast of Ireland to add to your collection? Don't have any to hand but it would give me an excuse to visit the beach! upload.wikimedia.org/wikipedia/co...

this is fucking INSANE. can get lost for hours. how do computers even work?

u got moon and mars sands on there?

Maybe we could make a map of the locations?