[Rockhounds] Need Quick Help

[John Scully]

thanks.  that seems to be what is.

☺

On Oct 24, 2017 8:14 PM, "THE HAMMER" <hammerron at hotmail.com> wrote:

> John, All:
>
>
> I can't offer any suggestions regarding the find on your trip, but did
> find this article on blue spinel from Vietnam colored by cobalt (link below)
>
>
> -Ron
>
>
> https://www.gia.edu/gems-gemology/spring-2015-blue-
> spinel-luc-yen-district-vietnam
>
> Blue Spinel from the Luc Yen District of Vietnam | Gems ...<
> https://www.gia.edu/gems-gemology/spring-2015-blue-
> spinel-luc-yen-district-vietnam>
> www.gia.edu
> Offers geological context and gemological characterization of this
> increasingly popular vivid blue spinel from northeast Vietnam.
>
>
>
>
> ________________________________
> From: Rockhounds <rockhounds-bounces at rockhounds.drizzle.com> on behalf of
> John Scully <jscully216 at gmail.com>
> Sent: Monday, October 23, 2017 7:13 PM
> To: Lueth, Virgil
> Cc: Rockhounds
> Subject: Re: [Rockhounds] Need Quick Help
>
> hi, Virgil
>
> thanks for the response.
>
> i think i found the answer.  i continued to try Google and entered cobalt
> blue vietmamese mineral and got back cobalt blue spinel with enough
> pictures and explanation to figure out that that is what they are selling
> here.  makes sense given all the other spinels here.  it is too pricey for
> me to buy, so none will becoming back
>
>
> john scully
> @
>
>
> On Oct 24, 2017 12:03 AM, "Lueth, Virgil" <virgil.lueth at nmt.edu> wrote:
>
> > Hi John,
> >
> > It's a new one on me, most cobalt secondaries are purple to orange.
> > However, there is a cobaltoan willemite (xingshaoite) reported with a
> blue
> > to violet color from China. Descriptions indicate it is typically
> > crystalline. No images are extant on Mindat or the web.
> >
> > Additional sleuthing suggests it may be a fake. I saw a report on blue
> > glass (cobalt glass) on matrix from Indonesia.
> >
> > Best I can do...have a pleasant remainder of your trip.
> >
> > Virgil
> >
> >
> >
> > On Mon, Oct 23, 2017 at 2:11 AM, John Scully <jscully216 at gmail.com>
> wrote:
> >
> >> Hello, All
> >>
> >> I am in Yen The, Vietnam for two more days.  The shops are selling a new
> >> mineral they call coban or co ban.  It is small bright blue crystals
> >> crusted on an indeterminate matrix.  Under a loupe the crystals are
> >> formless.  It is very pricey.  I cannot find anything out about it on
> >> Google except that it means "cobalt" in Vietnamese.  Help!  If it
> really is
> >> something desirable beyond its nice appearance, I would buy a few
> pieces.
> >>
> >> Thanks
> >> John Scully
> >> ☺
> >>
> >
> >
> >
> > --
> > Virgil W. Lueth, Ph.D.
> > Sr. Mineralogist/Economic Geologist
> > Director - Mineral Museum & X-Ray Diffraction Lab
> > New Mexico Bureau of Geology - New Mexico Tech
> > 801 Leroy Place
> > <https://maps.google.com/?q=801+Leroy+PlaceSocorro,+NM+
> 87801+575&entry=gmail&source=g>
> > Socorro, NM 87801
> > <https://maps.google.com/?q=801+Leroy+PlaceSocorro,+NM+
> 87801+575&entry=gmail&source=g>
> > 575
> > <https://maps.google.com/?q=801+Leroy+PlaceSocorro,+NM+
> 87801+575&entry=gmail&source=g>-835-5140
> > office
> > 575-835-6333 fax
> > Virgil.Lueth at nmt.edu
> >
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