[Rockhounds] quartz sphere -> quartz hydrocarbon inclusions

Sun Sep 28 03:07:49 PDT 2008

Dave

The color seems to depend on the composition of the petroleum.
I have seen blue, green and pale yellow. The more orange fluorescing
inclusions may be apatite inclusions. I saw those only once in a few
crystals but the owner wouldn't give one up for trade.

Naturally occurring coronenes and naphtalenes tend to color the fluorescence
of hydrocarbon inclusions blue. I don(t know (yet ;-)) where the yellow
fluorescence comes from. It could be petroleum that is low in aromatic
components.

Cheers
Axel

> -----Oorspronkelijk bericht-----
> Van: rockhounds-bounces at lists.drizzle.com
[mailto:rockhounds-bounces at lists.drizzle.com]
> Namens Jeffrey T. Cessna
> Verzonden: zondag 28 september 2008 1:37
> Aan: Rockhounds at drizzle.com: A mailing list for rock and gem collectors
> Onderwerp: RE: [Rockhounds] quartz sphere -> quartz hydrocarbon inclusions
> 
> Dave, Axel, Anybody,
> 
> What color do your hydrocarbon inclusions fluoresce and under what
wavelength?
> 
> I bought some DT Quartz xtals (location: Duetta Balochistan,
> Pakistan) today. I see bright blue under SW and slightly less bright
> under LW. I couldn't tell if I was just seeing internal flaws
> reflecting the small amount of visible blue from the lamp. I did run
> the lamp over the whole tray and only saw the blue in some of them.
> 
> I thought the inclusion I had seen in the past fluoresced
> yellow/green. Thoughts?
> 
> Thanks,
> Jeff
> 
> PS Does anybody else call these "Herkimers" Pakimers?
> 
> 
> At 02:27 PM 9/27/2008, you wrote:
> >Dave,
> >
> >Is this in crystals ore massive quartzite? The crystals that I'm talking
> >about are only about 1 cm (0,39 in) or less in size. The Afghan quartz
> >inclusion are a few millimetres.
> >Very pretty indeed but small. I can send a photo off list to any who
wants
> >it.
> >
> >Axel
> >
> >
> > > -----Oorspronkelijk bericht-----
> > > Van: rockhounds-bounces at lists.drizzle.com
> >[mailto:rockhounds-bounces at lists.drizzle.com]
> > > Namens betdav97 at aol.com
> > > Verzonden: vrijdag 26 september 2008 22:47
> > > Aan: rockhounds at lists.drizzle.com
> > > Onderwerp: Re: [Rockhounds] quartz sphere question
> > >
> > > Axel,
> > >   Our quartz from WV that has petroleum and
> > > carbon inclusions, that fluoresce also.
> > > dave
> > >
> > >
> > > -----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: Fri, 26 Sep 2008 2:46 pm
> > > Subject: RE: [Rockhounds] quartz sphere question
> > >
> > >
> > >
> > > I have dome "herkimer quartz" from Afghanistan.
> > > The gas bubbles inside contain a naturally cracked petroleum with
> > > methane
> > > bubbles, petroleum and asphalt. All very nicely fluorescent too.
> > > The bubbles sometimes show a "negative" quartz crystal shape. As if a
> > > small
> > > quartz crystal inside dissolved somehow. Rather puzzling.
> > >
> > > Axel
> > >
> > > > -----Oorspronkelijk bericht-----
> > > > Van: rockhounds-bounces at lists.drizzle.com
> > > [mailto:rockhounds-bounces at lists.drizzle.com]
> > > > Namens Pmodreski at aol.com
> > > > Verzonden: vrijdag 26 september 2008 4:29
> > > > Aan: rockhounds at lists.drizzle.com
> > > > Onderwerp: Re: [Rockhounds] quartz sphere question
> > > >
> > > > I'll try too...
> > > >
> > > > Almost all quartz crystal will have some imperfections--fractures or
> > > cloudy
> > > > patches or inclusions.  If it does have them (check it out with a
> > > magnifying
> > > > lens), it's probably confirmed as quartz.  If it has none, if it  is
> > > > absolutely clear with no flaws at all, it is likely glass.
> > > >
> > > > Along the same line, to be more sure; scrutinize any such
> > > imperfections
> > > > closely.  If they are bubbles, little spherical ones, it is probably
> > > glass.  If
> > > > they are lines or planes of some sort, then, quartz.   If you don't
> > > see
> > > ANY
> > > > such things of any sort--well, as I said, I'd suspect  glass, but
one
> > > couldn't be
> > > > absolutely certain.
> > > >
> > > > Look at in under a black light too.  A lot of glass fluoresces, at
> > > least
> > > > slightly; most quartz does not, except for any inclusion particles
> > > perhaps.
> > > >
> > > > Measuring the specific gravity is probably "easier said than done".
> > > One
> > > > easy way; weigh it on an accurate balance, then measure the diameter
> > > with
> > > an
> > > > accurate pair of calipers, and calculate the volume and then the
> > > specific
> > > > gravity, using "simple geometry which everyone remembers (ha ha)
from
> > > high
> > > school &
> > > > college math & physics.  Quartz should be very close to  2.65 grams
> > > per
> > > cubic
> > > > centimter; glass, as Kreigh says, should be somewhat  less.
> > > >
> > > > P.S., I just tried looking this up (density of glass), and the two
> > > are so
> > > > close, it would not be very reliable to use density to distinguish
> > > them,
> > > I'm
> > > > afraid.  I find the density of common "crown" glass to be around 2.5
> > > g/cc,
> > > but
> > > > can vary from 2.4 to 2.8, and "flint glass" and lead crystal (which
is
> > > glass)
> > > > are even higher.  Oh well.
> > > >
> > > > cheers,
> > > > Pete
> > > >
> > > >
> > > >
> > > > **************Looking for simple solutions to your real-life
financial
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