Macro photograph of sand grains that are mostly white and tan, with a mix of different shapes and textures.

Biogenic sand from Exmouth, Western Australia. Grains consist primarily of coral and shell fragments, as well as many octocoral spicules.

#MacroMonday #sand #arenophile #sandgrains #macrophotography

Macro photograph of translucent green sand grains composed of olivine. There are also black basalt grains present.

Olivine sand with some basalt grains. South Point, Hawaii. Collected prior to current laws prohibiting removal.

#arenophile #sand #olivine #greensand

Macro photograph of sand/gravel grains consisting of translucent and gray quartz, and tan and peach colored feldspar.

Quartz and feldspar grains from Corsica, France.

#sand #arenophile

Sand— gravel, actually— from near the wreck of the Cornwallis in Bounty Bay, Pitcairn Island. The components are mostly weathered shell & coral fragments, and basalt. The historic ship wreck seems to be a bit of an obscure one.

#macrophotography #arenophile #sand #geologyrocks #macro #geology

Oolitic sand from the Great Salt Lake, Utah. The ooids are believed to have formed around a nucleus composed of brine shrimp fecal pellets. Sample 0061.

#sand #arenophile #ultramacrophotography