Chrysoprase from Gumigil, Queensland
Chrysoprase from Gumigil, near Marlborough in central east Queensland, occurs in weathered ophiolite of the Marlborough Block, in veins up to 20 cm thick in the lower parts of an approximately 50 m-thick regolith profile. Serpentinised harzburgite saprolite hosting magnesite and chalcedony veins with rare chrysoprase grades upward to a plasmic zone of chalcedony, nontronite and chlorite, with a lateritised zone above consisting of nodular or vermiform ferruginous duricrust, boxwork chalcedony...[Show more]
|Collections||ANU Research Publications|
|Source:||Australian Journal of Earth Sciences|
|01_Eggleton_Chrysoprase_from_Gumigil,_2011.pdf||3.12 MB||Adobe PDF||Request a copy|
|02_Eggleton_Chrysoprase_from_Gumigil,_2011.pdf||3.12 MB||Adobe PDF||Request a copy|
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