[Rockhounds] ID help

[Axel Emmermann]

Any triangular growth Lines on any of the faces? That would indicate
corundum...

Axel

 

> -----Oorspronkelijk bericht-----
> Van: rockhounds-bounces at lists.drizzle.com
[mailto:rockhounds-bounces at lists.drizzle.com]
> Namens Tina Shahroody
> Verzonden: woensdag 24 juni 2009 5:27
> Aan: Rockhounds at drizzle.com: A mailing list for rock and gem collectors
> Onderwerp: RE: [Rockhounds] ID help
> 
> 
> 
> --- On Tue, 6/23/09, Earl R. Verbeek <everbeek at ptd.net> wrote:
> 
> From: Earl R. Verbeek <everbeek at ptd.net>
> Subject: RE: [Rockhounds] ID help
> To: "'Rockhounds at drizzle.com: A mailing list for rock and gem collectors'"
> <rockhounds at lists.drizzle.com>
> Date: Tuesday, June 23, 2009, 2:22 PM
> 
> Well, THAT still sounds like topaz, particularly from the region you
> mention.
> 
> -----Original Message-----
> From: rockhounds-bounces at lists.drizzle.com
> [mailto:rockhounds-bounces at lists.drizzle.com] On Behalf Of Lawrence Rush
> Sent: Tuesday, June 23, 2009 3:01 PM
> To: Rockhounds at drizzle.com: A mailing list for rock and gem collectors
> Subject: Re: [Rockhounds] ID help
> 
> Aha! They fluoresce a deep dark red! But, too hard for
> feldspar.......getting any closer, Axel?
> 
> Larry
> ----- Original Message -----
> From: "Axel Emmermann" <axel.emmermann at pandora.be>
> To: "'Rockhounds at drizzle.com: A mailing list for rock and gem collectors'"
> <rockhounds at lists.drizzle.com>
> Sent: Tuesday, June 23, 2009 2:51 PM
> Subject: RE: [Rockhounds] ID help
> 
> 
> > Larry,
> >
> > Topaz would have a distinct cleavage.
> > It breaks very easily in a plane that is perpendicular to the C-axis.
> > If you'd drop one of those hey would easily shatter and break at the
basal
> > plane.
> > I don't see that in you photos.
> > If I were to bet... some feldspar? Orthoclase? Microcline?
> > But zoisite and amblygonite are also possible...
> >
> > Any fluorescence?
> > Come on, Larry... make it shine ;-)))
> >
> > Cheers
> >
> > Axel
> >
> >
> > Axel Emmermann
> > European Regional Vice President of the
> > Fluorescent Mineral Society
> > <http://www.uvminerals.org/>
> > =========================
> > Mineralogische Kring Antwerpen/Antwerp Mineralogical Society
> > <http://www.minerant.org/index.html>
> > Werkgroepleider/Workgroup leader: Fluorescerende mineralen/Fluorescent
> > minerals
> > Technische Realisaties/Engineering
> > My website: http://users.telenet.be/axel.emmerman/FiatLux/Index.php
> >
> >
> >> -----Oorspronkelijk bericht-----
> >> Van: rockhounds-bounces at lists.drizzle.com
> > [mailto:rockhounds-bounces at lists.drizzle.com]
> >> Namens Lawrence Rush
> >> Verzonden: dinsdag 23 juni 2009 18:51
> >> Aan: rockhounds at lists.drizzle.com
> >> Onderwerp: [Rockhounds] ID help
> >>
> >> I just got a box of minerals from Pakistan which contained 2 pieces of
an
> > unidentified
> >> material. These are unfamiliar to me, and I need some help.
> >>
> >> The color is a sea green, translucent. The crystals are well formed,
> > appear to be perhaps
> >> Tetragonal or Orthorhombic. They have 4 distinct sides, diamond-shaped
in
> > cross section,
> >> with  sharp low angle edges on 2 sides. The hardness is greater than 6.
> > The matrix is quartz,
> >> evidently a pegmatite mineral. No locality, but all of the others from
> > this supplier were from
> >> Afghanistan, Pakistan, and Waziristan.
> >>
> >> I suspect they are Topaz, but the shape and color have me questioning
> > this.
> >>
> >> I posted photos on http://www.connroxminerals.com/temp.html
> >>
> >> Any thoughts?
> >>
> >> Thanks...Larry
> >>
> >>
> >>
> >>
> >> "Noel Coward thought work was more fun than play,  but he never, ever
> > worked in the mines"
> >>
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