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Brian McMorrow | all galleries >> Middle East, North Africa & the Caucasus >> Tunisia تونس >> Nefta & Dunes de Sable > "Desert Rose" - gypsum crystals and sand
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Desert Rose - gypsum crystals and sand

"Desert Rose" - gypsum crystals and sand

Data about the Desert rose:

Chemical formula CaSO4 * 2H2O
Mineral class sulfates
Crystal system monoclinical
Hardness 1.5 to 2
Density 2.3 g/cm3 to 2.4 g/cm3
Color red-brown
Line color white
Gloss glass gloss
Break unevenly
Fissileness perfectly

That's what you get when you show a rock to a geologist.

Nikon D100
1/320s f/9.0 at 66.0mm full exif

other sizes: small medium original
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