Why is White Sands Desert in New Mexico so purely white?

it is gypsum
it is very fine grained sand
it iswhite quartz
it is an optical illusion
White Sands, having 442 total square kilo­me­ters of dune fields, is the world's largest surface deposit of gypsum. Unlike other desert sands, it is cool to the touch, due to the high rate of evap­o­ra­tion of surface moisture and the fact that the sands reflect, rather than absorb, the sun's rays.

Answers distribution

it is gypsum
it is very fine grained sand
it iswhite quartz
it is an optical illusion
answers
flagthe United Arab Emirates
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flagIndia
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Gender

men27%
women24%
it is gypsum
27%
24%
it is very fine grained sand
12%
8%
it iswhite quartz
37%
39%
it is an optical illusion
22%
26%

Details

Author: Debbie Fox
Illustration: davebluedevil
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