Quartz crystal
Quartz. Quartz crystals are the most abundant and common mineral consisting of crystalline silica (silicon dioxide). The well-formed crystals of quartz are usually pyramidal in shape. this structure has a hardness of 7 on the Mohs scale. Pure forms are c
Picture No
13625604
Media ID
43075077
Size
3000px x 1988px
(1.4MB)
Credit
Charles D. Winters /Science Source/ www.ardea.com
Category
NA
Availability
Available in UK only. No agents
Ardea Picture Library
Picture No
13625604
Contributor Ref
SCS-90074838
