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Grenoble Mineral Show, 27/28 september 2008
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chris
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PostPosted: Sep 28, 2008 13:59    Post subject: Grenoble Mineral Show, 27/28 september 2008  

As each year the show took place between Denver & München. It is interesting because several dealers were back from Denver with new specimens while local cristalliers had brought there summer finds.

Chamonix being not very far from Grenoble (2 hours drive), we also had specimens found recently in the Mont-Blanc range. As a result I have selected pictures of specimens coming both from the area and from Chamonix.

As last time, the report is splitted in 2 parts. The first one being about the specimens offered for sale during the show, while the second part will focus on the display case of the Mineralogy Club of Grenoble, host of the show.

Back in the early 1980's nice epidote crystals were found in Montagne du Cornillon which produced nice specimens before been worked out. Several cristalliers prospected the area hoping to strike a new « bonanza ». Between 2007/2008 a new discovery occured producing nice specimens of epidote with quartz such as these sold by M. Dufrêne one the prospector.



Cornilon_dufrene2.jpg
 Description:
Epidote, Dufrêne's display
 Viewed:  28592 Time(s)

Cornilon_dufrene2.jpg



Cornillon_dufrene.jpg
 Description:
Epidote, Dufrêne's display
 Viewed:  28617 Time(s)

Cornillon_dufrene.jpg


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PostPosted: Sep 28, 2008 14:02    Post subject: Grenoble Mineral Show, 27/28 september 2008  

On the other side of the Romanche valley stands the Belledonne range. This amphibolite rich range (as Cornillon) hosts several spots where epidote can be found usually combined with byssolite and/or actinolite (asbestos).


Brochier_epidote.jpg
 Description:
Epidote & actinolite, Bernard Brochier's display.
 Viewed:  28677 Time(s)

Brochier_epidote.jpg


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PostPosted: Sep 28, 2008 14:03    Post subject: Grenoble Mineral Show, 27/28 september 2008  

While being in the Belledonne's range, a nice cluster of axinite from the Glandon Pass. This one was collected several years ago. Note the small epidote cluster.


Axinite_Glandon_Darphin.jpg
 Description:
Darphin's display.
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Axinite_Glandon_Darphin.jpg


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PostPosted: Sep 28, 2008 14:05    Post subject: Grenoble Mineral Show, 27/28 september 2008  

As Usual M. Darphin had a small display case with gold from the old and now closed Gardette Mine. Even if the gold production remained low, it produced nice quartz crystals (to see in part II).


Or_Gardette_Darphin.jpg
 Description:
Darphin's display.
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Or_Gardette_Darphin.jpg


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PostPosted: Sep 28, 2008 14:07    Post subject: Grenoble Mineral Show, 27/28 september 2008  

But my favours went to this perfect small cabinet size prehnite from La Combe de la Selle, St Christophe en Oisans. Typical shape, perfect color... Unfortunately for me, not a sulfide...


Prehnite_Darphin.jpg
 Description:
Darphin's display.
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Prehnite_Darphin.jpg


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PostPosted: Sep 28, 2008 14:08    Post subject: Grenoble Mineral Show, 27/28 september 2008  

Always in Oisans a quartz classic from les 2 Alpes. It is lightly smokey, something less usual here than in Chamonix.


Brochier_quartz.jpg
 Description:
Bernard Brochier's display.
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Brochier_quartz.jpg


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PostPosted: Sep 28, 2008 14:10    Post subject: Grenoble Mineral Show, 27/28 september 2008  

Several specimens from Vizille were also available (Vizille being at a 20 minutes drive from Grenoble). Around Vizille, the main combination is quartz & siderite. Sometimes these minerals are mixed with sulfides (pyrite, bournonite, ...), less usually with Baryte as on this large cabinet size one having nice Baryte blades.


Brochier_vizille.jpg
 Description:
Bernard Brochier's display.
 Viewed:  28585 Time(s)

Brochier_vizille.jpg


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PostPosted: Sep 28, 2008 14:11    Post subject: Grenoble Mineral Show, 27/28 september 2008  

Another example from the locality with rhombo siderite & quartz coming from « le trou des chasseurs » (hunters'hole).


Vizille_Desfarge&Bodinat.jpg
 Description:
Sylvain Desfarge & Grégoire de Bodinat 's display.
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Vizille_Desfarge&Bodinat.jpg


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PostPosted: Sep 28, 2008 14:12    Post subject: Grenoble Mineral Show, 27/28 september 2008  

Or this one bought by a local collector. It has the typical quartz habit of the area. Note the iron staining remaining even after a sodium dithionite's cleaning.


Vizille_pc.jpg
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Vizille_pc.jpg


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PostPosted: Sep 28, 2008 14:15    Post subject: Grenoble Mineral Show, 27/28 september 2008  

If these large size cabinets were not big enough for you, you had the choice to bring this one home. The 2 € coin at the bottom is 2,5 cm in diameter (1 inch). I let you guess its size. Moreover its aesthetic was enhanced by the irisation of the siderite's crystals. Very impressive.


Vizille2_Desfarge&Bodinat.jpg
 Description:
Sylvain Desfarge & Grégoire de Bodinat's display
 Viewed:  28624 Time(s)

Vizille2_Desfarge&Bodinat.jpg


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PostPosted: Sep 28, 2008 14:16    Post subject: Grenoble Mineral Show, 27/28 september 2008  

A bit farer north, the area around pontcharra produced window quartz. These small cabinet ones were sold at a fair price, allowing beginners to start without spending hundreds...


Pontchara_Desfarge&Bodinat.jpg
 Description:
Sylvain Desfarge & Grégoire de Bodinat's display
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Pontchara_Desfarge&Bodinat.jpg


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PostPosted: Sep 28, 2008 14:18    Post subject: Grenoble Mineral Show, 27/28 september 2008  

Standing just beside Sylvain & Grégoire, Sébastien Khayati was offering small cabinet size specimens of quartz with adulaire and quartz with hematite from the Mont-Blanc...


Khayati_adulaire.jpg
 Description:
Khayati's display.
 Viewed:  28584 Time(s)

Khayati_adulaire.jpg



Khayati_hematite.jpg
 Description:
Khayati's display.
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Khayati_hematite.jpg


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PostPosted: Sep 28, 2008 14:22    Post subject: Grenoble Mineral Show, 27/28 september 2008  

While cristalliers from Chamonix had brought the new finds mixed with older specimens...


Pierades_Chappelier.jpg
 Description:
Gwindel with pink fluorite, Chapellier's display.
 Viewed:  28563 Time(s)

Pierades_Chappelier.jpg



Dent_Geant_Chappelier.jpg
 Description:
Gwindel, Dent du Géant, Chapellier's display.
 Viewed:  28583 Time(s)

Dent_Geant_Chappelier.jpg



Cham3_Chappelier.jpg
 Description:
Smokey cluster, Chapellier's display.
 Viewed:  28587 Time(s)

Cham3_Chappelier.jpg


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PostPosted: Sep 28, 2008 14:23    Post subject: Grenoble Mineral Show, 27/28 september 2008  

Amongst them an originality : a large plate of smokey with a cluster of epidote, a rarity in the Mont-Blanc's range.


Fume&Epidote_Chappelier.jpg
 Description:
Chapellier's display.
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Fume&Epidote_Chappelier.jpg


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PostPosted: Sep 28, 2008 14:25    Post subject: Grenoble Mineral Show, 27/28 september 2008  

Conclusion : There were less minerals from the area than last year. However prospection is still under way and could reserve good surprises. The good news came from Chamonix. According to the cristalliers I talked to, more pockets have been found this summer than during the previous years. If you are interested by smokey quartz, keep an eye on Chamonix.

Second part coming soon...
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PostPosted: Sep 29, 2008 09:49    Post subject: Re: Grenoble Mineral Show, 27/28 september 2008  

Part II :

As usual during mineral shows, you can find display cases showing minerals coming from different collectors and/or museums. This year, the Grenoble show hosted minerals from the Mineralogy Club of Grenoble host of the show.



CG6.jpg
 Description:
Siderite from St-Pierre de Mésage, Isère, France. Large cabinet to museum size.
 Viewed:  28436 Time(s)

CG6.jpg



CG5.jpg
 Description:
My favorite : several centimeters on edge bournonite crystals on ruby jack sphalerite with calcite from the old coal mine of La Mure, Isère, France. Large cabinet.
 Viewed:  28443 Time(s)

CG5.jpg



CG4.jpg
 Description:
Quartz from the old gold mine of La Gardette (Villard Notre Dame, Isère, France). Large cabinet to museum size.
 Viewed:  28440 Time(s)

CG4.jpg



CG3.jpg
 Description:
Epidote & quartz (St Véran, Hautes-Alpes, France). Museum size.
 Viewed:  28489 Time(s)

CG3.jpg



CG1.jpg
 Description:
Siderite & quartz from Allevard's area (Allevard, Isère, France). Large Cabinet.
 Viewed:  28431 Time(s)

CG1.jpg


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PostPosted: Sep 29, 2008 10:00    Post subject: Re: Grenoble Mineral Show, 27/28 september 2008  




CG11.jpg
 Description:
Window quartz from the Allos Pass, Alpes de Haute-Provence, France.
 Viewed:  28905 Time(s)

CG11.jpg



CG10.jpg
 Description:
Window quartz from the Allos Pass, Alpes de Haute-Provence, France.
 Viewed:  28479 Time(s)

CG10.jpg



CG9.jpg
 Description:
Smokey quartz from Les 2 Alpes, Isère, France. Large cabinet size.
 Viewed:  28467 Time(s)

CG9.jpg



CG8.jpg
 Description:
Phantom quartz (chlorite inclusions) from the Maurienne Valley, Savoie, France. Large cabinet size.
 Viewed:  28461 Time(s)

CG8.jpg



CG7.jpg
 Description:
Bi-terminated epdiote crystals on prehnite with calcite. St Christophe en Oisans, Isère, France. Large cabinet size.
 Viewed:  28437 Time(s)

CG7.jpg


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PostPosted: Sep 29, 2008 10:06    Post subject: Re: Grenoble Mineral Show, 27/28 september 2008  




CG19.jpg
 Description:
Iron stained quartz (unknown location). Large cabinet size.
 Viewed:  28435 Time(s)

CG19.jpg



CG18.jpg
 Description:
Window quartz from pontcharra,Isère, France. Small cabinet size.
 Viewed:  28437 Time(s)

CG18.jpg



CG17.jpg
 Description:
Faden quartz (unknown location). Cabinet size.
 Viewed:  28442 Time(s)

CG17.jpg



CG16.jpg
 Description:
Another specimen of quartz on siderite from Allevard, Isère, France. Cabinet size.
 Viewed:  28447 Time(s)

CG16.jpg



CG15.jpg
 Description:
Axinite from the Glandon Pass, Savoie, France. Cabinet to large cabinet size.
 Viewed:  28436 Time(s)

CG15.jpg


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PostPosted: Sep 29, 2008 10:12    Post subject: Re: Grenoble Mineral Show, 27/28 september 2008  




CG14.jpg
 Description:
Garnet on asbestos (?) from St Véran, Hautes-Alpes, France. The largest known crystal from the location.
 Viewed:  28439 Time(s)

CG14.jpg



CG13.jpg
 Description:
A huge pyromorphite from Les Farges. About 25 cm...
 Viewed:  28454 Time(s)

CG13.jpg



CG12.jpg
 Description:
Baryte on sphalerite from St Laurent le Minier, Gard, France. Large cabinet.
 Viewed:  28552 Time(s)

CG12.jpg



CG2.jpg
 Description:
Blue fluorite from Le Tarn, France. I guess it comes from le Burg. Museum size.
 Viewed:  28424 Time(s)

CG2.jpg


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PostPosted: Sep 29, 2008 10:21    Post subject: Re: Grenoble Mineral Show, 27/28 september 2008  

That's all folks for the Grenoble mineral show of this year. I would like to thank:
- Ms Anne Marie Guinier, president of the mineralogy club of Grenoble for allowing me to take pictures during the show.
- M. Georges Bellesserre for handing specimens & giving me explantions regarding the Club's display case.
- And to Georges Piccoli.
- My thanks too to the dealers who allowed my to take pictures of their specimens.

Christophe

PS: A third part will come soon. It will be a few pictures of fluorites from Le Burg taken at the display of French Dealers Claudette & Michel Cabrol.
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