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30 Nov-16:19:02 Re: collection of tobi (Carles Millan)
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30 Nov-07:27:16 Re: stumped. Help with identifying. (Peter Perkins)
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29 Nov-22:21:45 Re: long time listener.. First time caller. Gifted from underground coal mine (Bob Harman)
29 Nov-19:28:21 Stumped. Help with identifying (Lovealwaysblake)
29 Nov-19:07:55 Re: long time listener.. First time caller. Gifted from underground coal mine (Lovealwaysblake)
29 Nov-19:04:36 Re: long time listener.. First time caller. Gifted from underground coal mine (Lovealwaysblake)
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Popular Minerals
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Jordi Fabre
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PostPosted: Nov 04, 2020 17:43    Post subject: Popular Minerals - Violet Fluorapatite from Minas da Panasqueira  

Doubly terminated Fluorapatite crystal, with very well defined faces and edges and with a distinct geometric color zoning, popularly known in Panasqueira as “olho de boi” (ox's eye)


Fluorapatite with Quartz and Siderite - Minas da Panasqueira_Portugal.jpg
 Mineral: Fluorapatite with Quartz, Siderite, Muscovite and Chlorite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: Specimen size: 11.6 × 7.8 × 6.5 cm / Fluorapatite crystal size: 4 × 2.1 cm
 Description:
 Viewed:  1119 Time(s)

Fluorapatite with Quartz and Siderite - Minas da Panasqueira_Portugal.jpg


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Tobi




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PostPosted: Nov 05, 2020 09:08    Post subject: Re: Popular Minerals - Violet Fluorapatite from Minas da Panasqueira  

Jordi Fabre wrote:
Doubly terminated Fluorapatite crystal, with very well defined faces and edges and with a distinct geometric color zoning, popularly known in Panasqueira as “olho de boi” (ox's eye)
Fluorapatite with Quartz, Siderite, Muscovite and Chlorite
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
Specimen size: 11.6 × 7.8 × 6.5 cm / Fluorapatite crystal size: 4 × 2.1 cm
An incredibly nice specimen from Panasqueira, I love it!
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PostPosted: Nov 08, 2020 16:50    Post subject: Re: Popular Minerals - Violet Fluorapatite from Minas da Panasqueira  

Tobi wrote:
Jordi Fabre wrote:
Doubly terminated Fluorapatite crystal, with very well defined faces and edges and with a distinct geometric color zoning, popularly known in Panasqueira as “olho de boi” (ox's eye)
Fluorapatite with Quartz, Siderite, Muscovite and Chlorite
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
Specimen size: 11.6 × 7.8 × 6.5 cm / Fluorapatite crystal size: 4 × 2.1 cm
An incredibly nice specimen from Panasqueira, I love it!

Thanks Tobi
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PostPosted: Nov 08, 2020 16:54    Post subject: Popular Minerals - Hübnerite with Fluorite from Peru  

Parallel aggregates of Hübnerite on a matrix of Quartz crystals and with coatings of small white Fluorite crystals. A rare paragenesis.


Hübnerite with Quartz and Fluorite - Huayllapon Mine_Peru.jpg
 Mineral: Hübnerite with Fluorite and Quartz
 Locality:
Huayllapon Mine (Huallapon Mine), Pasto Bueno District, Pallasca Province, Ancash Department, Peru
 Dimensions: Specimen size: 9.8 × 8 × 7 cm / main crystal of Fluorite: 0.8 × 0.8 cm
 Description:
Former collection of Jan Buma. Number 081201
 Viewed:  952 Time(s)

Hübnerite with Quartz and Fluorite - Huayllapon Mine_Peru.jpg


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PostPosted: Nov 13, 2020 18:08    Post subject: Popular Minerals - Malachite after Cuprite and on Azurite from Chessy  

Sharp octahedral Malachite pseudomorphs after Cuprite crystals on Azurite crystals. A French classic.


Malachite after Cuprite with Azurite - Chessy-les-Mines_Auvergne_Rhône-Alpes_France.jpg
 Mineral: Malachite after Cuprite on Azurite
 Locality:
Chessy-les-Mines, Les Bois d'Oingt, Villefranche-sur-Saône, Rhône, Auvergne-Rhône-Alpes, France
 Dimensions: 3.1 × 3 × 1.6 cm
 Description:
 Viewed:  833 Time(s)

Malachite after Cuprite with Azurite - Chessy-les-Mines_Auvergne_Rhône-Alpes_France.jpg


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PostPosted: Nov 16, 2020 17:21    Post subject: Popular Minerals - Rhodochrosite from Greece  

Two rhombohedral Rhodochrosite crystals with polycrystalline growths. Implanted on a doubly terminated Quartz crystal and covered by small elongated and brilliant Arsenopyrite crystals.


Rhodochrosite with Quartz and Arsenopyrite - Cassandra Mines_Macedonia Department_Greece.jpg
 Mineral: Rhodochrosite with Quartz and Arsenopyrite
 Locality:
Cassandra Mines, Chalkidiki Prefecture, Macedonia Department, Greece
 Dimensions: Specimen size: 6.4 × 4.6 × 4.4 cm / main crystal size: 3.3 × 2.6 cm
 Description:
Former collection of René Hubin
 Viewed:  742 Time(s)

Rhodochrosite with Quartz and Arsenopyrite - Cassandra Mines_Macedonia Department_Greece.jpg


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PostPosted: Nov 19, 2020 17:28    Post subject: Popular Minerals -. Bertrandite from Kara-Oba, Kazakhstan  

Groups of flat prismatic Bertrandite crystals, many of them doubly terminated, which contrast with the smoky tones of the group of Quartz crystals, partially covered by small Pyrite crystals.
An example of a rare species from a currently extinct locality.



Bertrandite with Quartz and Pyrite - Kara-Oba_Karaganda Region_Kazakhstan.jpg
 Mineral: Bertrandite with Quartz and Pyrite
 Locality:
Kara-Oba, Betpak-Dala (Bet-Pak-Dala) Desert, Karaganda Region, Kazakhstan
 Dimensions: Specimen size: 24 × 20 × 14 cm / main crystal size of Bertrandite: 1 × 0.4 cm
 Description:
 Viewed:  603 Time(s)

Bertrandite with Quartz and Pyrite - Kara-Oba_Karaganda Region_Kazakhstan.jpg


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PostPosted: Nov 21, 2020 17:38    Post subject: Popular Minerals - Fluorite from the Johannesschacht_Mine, Bavaria, Germany  

Druse of Fluorite crystals with a honey color with intense yellow reflections. This specimen comes from one of the great classical German localities for the species.


Fluorite - Johannesschacht Mine_Bavaria_Germany.jpg
 Mineral: Fluorite
 Locality:
Johannesschacht Mine, Wölsendorf, Schwarzach bei Nabburg, Wölsendorf West District, Upper Palatinate/Oberpfalz, Bavaria/Bayern, Germany
 Dimensions: Main crystal size: 3.9 × 1.7 cm
 Description:
 Viewed:  480 Time(s)

Fluorite - Johannesschacht Mine_Bavaria_Germany.jpg


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PostPosted: Nov 22, 2020 08:01    Post subject: Re: Popular Minerals - Fluorite from the Johannesschacht_Mine, Bavaria, Germany  

Jordi Fabre wrote:
Druse of Fluorite crystals with a honey color with intense yellow reflections. This specimen comes from one of the great classical German localities for the species.
Wonderful Wölsendorf piece, it has the best possible colour for "Honigspat" fluorite!

Jordi Fabre wrote:
Groups of flat prismatic Bertrandite crystals, many of them doubly terminated, which contrast with the smoky tones of the group of Quartz crystals, partially covered by small Pyrite crystals. An example of a rare species from a currently extinct locality.
What a gorgeous combination from that classic locality! I really like minerals from Kazakhstan and especially from Kara-Oba, I have a nice 13 cm smoky quartz with bertrandite from there. But this one, 24 x 20 x 14 cm, that's superb!

Besides smoky quartz, bertrandite and pyrite, I think I see a fourth mineral on the specimen, what's the pale brownish material?

Thanks
Tobi
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PostPosted: Nov 22, 2020 11:44    Post subject: Re: Popular Minerals - Fluorite from the Johannesschacht_Mine, Bavaria, Germany  

Tobi wrote:
...Besides smoky quartz, bertrandite and pyrite, I think I see a fourth mineral on the specimen, what's the pale brownish material?

Thanks Tobi. The pale brownish material it seems to be a Carbonate but as I haven't analyzed it I don't listed it. It could be Calcite, Dolomite, Siderite or even a mix including Rhodochrosite. We could only know by analyzing it.
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PostPosted: Nov 26, 2020 18:12    Post subject: Popular Minerals - Ludlamite from Amazonas, Brazil  

Ludlamite crystals with parallel growths, well-defined faces and edges, and with spheroidal Siderite.


Ludlamite with Siderite - Cabeça_do_Cachorro_claim_Amazonas_Brazil.jpg
 Mineral: Ludlamite on Siderite
 Locality:
Cabeça do Cachorro claim, São Gabriel da Cachoeira, Amazonas, Brazil
 Dimensions: Specimen size: 6.6 × 4.2 × 2.4 cm / main crystal size: 1 × 0.6 cm
 Description:
Collected in 2019
 Viewed:  117 Time(s)

Ludlamite with Siderite - Cabeça_do_Cachorro_claim_Amazonas_Brazil.jpg


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