Opal from Australia
Opal is hydrated silicon oxide. Unlike quartz (silica) which is pure silicon dioxide, opal has some water in its structure, and takes the form of microscopic spherules of various sizes. When these spherules accumulate in a loose jumble the opal is nondesc
Picture No
13626245
Media ID
43069703
Size
3855px x 2553px
(4.6MB)
Credit
Joel Arem /Science Source/ www.ardea.com
Category
NA
Availability
Available in UK only. No agents
Ardea Picture Library
Picture No
13626245
Contributor Ref
SCS-90075479
