November 9, 2011
sand, magnified 4x (via Nikon Small World - 2011 - Yanping Wang)

sand, magnified 4x

(via Nikon Small World - 2011 - Yanping Wang)

4:10pm
(Notes: 1,553)
  
Filed under: science sand beach ocean geology rocks 
August 28, 2011
Sand from Kalalau Beach, Hawaii (Field width = 5.5 mm). We see a few grains ofolivine, which is the green sand of some beaches of Hawaii.

Sand from Kalalau Beach, Hawaii (Field width = 5.5 mm). We see a few grains ofolivine, which is the green sand of some beaches of Hawaii.

2:25pm
(Notes: 183)
  
Filed under: Sand Kalalau Beach Hawaii olivine green sand science geology rocks rock