Day #29 Deskcrop: “Salt & Pepper”* Sand

Concluding the geomeme of sand for this week… if you’re up to the challenge, comment on what you think the composition of the sand is and where it’s from. We’ll find out who knows their sand… ;-)

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“Salt & Pepper” Sand (Macro)

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“Salt & Pepper” Sand (15mm microscopic)

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“Salt & Pepper” Sand (microscopic closeup)

*Not actual salt and pepper.

[Update: Okay, I cheated a bit here. This is not in fact a natural sediment – rather it is the sand size separate from a mechanical crush of fresh Half Dome Granodiorite, originating from near Olmstead Point in Yosemite National Park. If I had collected actual sand from this area I doubt the biotite grains would be quite so fresh and unweathered. By the way, did you spot that little wedge of sphene (titanite) in the most magnified view?]