[Rockhounds] Was green sand, now tetrahexahedral fluorite

[Alan Goldstein]

When my wife was able to collect, she was good at finding fossils. A crinoid calyx here, a whole trilobite there... All in our collection.

Corydon Quarry has tetrahexahedral fluorite in 1 mm purple xls with the occasional 2mm yellow xls. I found boulders of limestone last year in a rock dump near Corydon (construction dump) with a large boulder shot full of vugs with the tet-hex fluorite. Still have a flat of it. Donated a 12" wide vuggy specimen to the Indiana State Museum.

Alan G.

-----Original Message-----
From: Rockhounds <rockhounds-bounces at rockhounds.drizzle.com> On Behalf Of Axel Emmermann
Sent: Friday, June 22, 2018 7:14 AM
To: 'Rockhounds at drizzle.com: A mailing list for rock and gem collectors' <rockhounds at rockhounds.drizzle.com>
Subject: Re: [Rockhounds] Ongoing Eruptions...and green sand

My wife does that to... We once were in a quarry  looking for tiny cube of fluorite.
Nobody found s..t. My wife Christel, picked a small rock up and asked "is this what you're looking for?".
A lot of paper has been used to describe the two crystals on that rock.
Tetrahexahedral fluorite (yes, tetrakishexahedral is probably also good) seems to be quite rare.
How they do it is a mystery... however, since I started reading Terry Pratchet's Diskworld book series I have gained some insight in what may be going on here...

Axel 

-----Oorspronkelijk bericht-----
Van: Rockhounds <rockhounds-bounces at rockhounds.drizzle.com> Namens Kreigh Tomaszewski
Verzonden: vrijdag 22 juni 2018 6:29
Aan: Rockhounds at drizzle.com: A mailing list for rock and gem collectors <rockhounds at rockhounds.drizzle.com>
Onderwerp: Re: [Rockhounds] Ongoing Eruptions...and green sand

I am the alleged expert in the family, but my wife (almost) always finds the best field specimens; my wife has more fun in the field, but has
(absolutely) no interest in the science behind the specimen. One of these things is not like the other.  One of these things just doesn't belong, Can you tell which thing is not. I wish I had my wife's eyes. I'm just glad she shares.

Kreigh

On Thu, Jun 21, 2018 at 11:37 PM, gary brown <gbrown at catspaw-minerals.com>
wrote:

> Green sand?  I just shipped home a baggie collected on South Point on 
> the Big Island (NOT the "Green Sand Beach"... that's OFF LIMITS).
> Dorothy (of the eagle eyes) spotted some small drifts right above the 
> waves.  How come I'm the geologist and SHE always spots the Good Stuff.
Oh well...
> pictures
> will be posted soon.
>
> Gary
>
> PS.   I'll check out Kitty's driveway on Saturday!  She may end up with
> some
> potholes in it.  Just saying...
>
>
>
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