garnets and other gem stones

[palmerston]

just wondering if anybody has done any fossicking around milla milla , palmerston innisfail area found some garnets ,saphires and some other stones that look like obsidian but when u shine a light through them on a certain angle they are a lime green . just wondering if anybody has any ideas on what it might be

 

[AtomRat]

Could be a choice of many gemstone / mineral like a beryl, corundum, onyx, tourmaline... any photos?

 

[palmerston]

not atm its in the tumbler but u cant tell it apart from the obsidian unless u shine a torch through it on a certain angle

 

[SneakyCuttlefish]

In the book "How and where to find Gemstones" edited by Bill Myatt there is a brief mentioning of a near transparent, leaf green form of obsidian that is highly valued for gem cutting. Also some dark obsidian can display green-brownish tones in thin section.

Might be worth looking into.

 

[palmerston]

yer most of the obsidian is a browny green colour . ill have to look into it cheers

 

[Brumble-Gum]

Might be black spinel, usually found with those gems.

 

[Blingking]

Hey Atomrat, have you found that tin mine yet? Was near there today, found this piece of tourmalated quartz. Just wondering if that could be a sign of more precious gems being in the area?

 

[AtomRat]

Hey Atomrat, have you found that tin mine yet? Was near there today, found this piece of tourmalated quartz. Just wondering if that could be a sign of more precious gems being in the area?https://www.prospectingaustralia.com/forum/img/member-images/7342/1466938743_image.jpg

At 10 posts ill be able to PM you mate