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Bruce Mandell
Joined: 05 Aug 2014
Posts: 6
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 Posted: Aug 05, 2014 14:00 Post subject: Is this a real Green Tourmaline and Rodochrosite crystal in Raw form? |
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Just curious if these crystals are real, because I've seen them in many crystal shops in rod, tubular, and tumbled shapes.
Do you think they're real?
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Bruce Mandell
Joined: 05 Aug 2014
Posts: 6
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| Posted: Aug 05, 2014 14:02 Post subject: Re: Is this a real green tourmaline and rhodochrosite crystal in raw form? |
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This is raw Rhodochrosite? Is this real?
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Riccardo Modanesi
Joined: 07 Nov 2011
Posts: 630
Location: Milano
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| Posted: Aug 06, 2014 09:55 Post subject: Re: Is this a real Green Tourmaline and Rodochrosite crystal in Raw form? |
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Hi Bruce!
I think you are wrong with rhodochrosite. The specimen you showed is a so-called "water-melon" variety of elbaite, i.e. a tourmaline. I am quite doubtless about the green crystals: they are tourmaline, according to what I could see.
Greetings from Italy by Riccardo.
_________________
Hi! I'm a collector of minerals since 1973 and a gemmologist. On Summer I always visit mines and quarries all over Europe looking for minerals! Ok, there is time to tell you much much more! Greetings from Italy by Riccardo. |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Aug 06, 2014 10:04 Post subject: Re: Is this a real Green Tourmaline and Rodochrosite crystal in Raw form? |
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| Probably Rhodo, but test the hardness.
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4235
Location: Germany
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| Posted: Aug 06, 2014 10:27 Post subject: Re: Is this a real Green Tourmaline and Rodochrosite crystal in Raw form? |
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| Riccardo Modanesi wrote: | | I think you are wrong with rhodochrosite. The specimen you showed is a so-called "water-melon" variety of elbaite |
I don't think so: Water-melon tourmalines are tourmaline crystals that consist of blue/green and reddish parts. This specimen here shows some pink crystalline material inside a grey rock matrix. This is typical for several rhodochrosites, e.g. from China. The whole structure looks indeed like rhodochrosite, but finding out the locality will be impossible ...
Tobi
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5025
Location: Barcelona
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| Posted: Aug 06, 2014 10:52 Post subject: Re: Is this a real Green Tourmaline and Rodochrosite crystal in Raw form? |
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| GneissWare wrote: | | Probably Rhodo, but test the hardness. |
I agree, the hardness could prove it, also if a small parcel of it dissolves (very, very slowly, it could take days...) in Hydrochloric diluted 10% in water...
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