[Rockhounds] ID help

[Lawrence Rush]

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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