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Author Topic: Green Gemstone found in Hobart  (Read 3628 times)

mezanene

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Green Gemstone found in Hobart
« on: January 31, 2016, 09:08:47 PM »
Hi Everyone,

 Found this stone on the foreshore in Hobart. I was imbedded in the natural rock. I was wondering if someone could tell me what it is?



 Thanks

    Steve

[attachment deleted by admin]
« Last Edit: February 04, 2016, 07:59:26 AM by Aussie Sapphire »

MrSydney

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Re: Green Gemstone found in Hobart
« Reply #1 on: February 01, 2016, 12:36:32 AM »
It isn't visible on this thread.  You'll need to post a pic in the Gallery.

steveo

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Re: Green Gemstone found in Hobart
« Reply #2 on: February 01, 2016, 12:55:58 AM »
  Pic came up on my .pdf reader, looks like Prehnite. Maybe?
Steve

MakkyBrown

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Re: Green Gemstone found in Hobart
« Reply #3 on: February 01, 2016, 11:48:45 AM »
Agate/Chalcedony maybe. When you say imbedded? I'm not sure. What did the host rock look like? Olivine basalt or sedimentary(drop stone).

this might help
http://www.mrt.tas.gov.au/mrtdoc/dominfo/download/ER8312S0/ER8312S.pdf

mezanene

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Re: Green Gemstone found in Hobart
« Reply #4 on: February 01, 2016, 07:18:41 PM »
It looked like it was is a sandstone sediment layer. I have added a new picture

« Last Edit: February 04, 2016, 08:02:11 AM by Aussie Sapphire »

havarim

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Re: Green Gemstone found in Hobart
« Reply #5 on: February 01, 2016, 08:51:42 PM »
looks like prenite to me   is it know in that area

MakkyBrown

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Re: Green Gemstone found in Hobart
« Reply #6 on: February 01, 2016, 11:33:37 PM »
Not that I've heard off(or seen any) but .. there are a couple of mentions here http://eprints.utas.edu.au/14352/1/1961_Green_Geology_South_Arm.pdf
Small fleck bits in sandstone.
Could be worth doing some more research it could well be prehnite.
There is transported agate, chalcedony,carnelian, wood and other bits and pieces along the shores of the Derwent in the Hobart area.
I'll see what I can find out tomorrow, I'll ask a couple of blokes that should know.
Cheers
Andrew

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