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Jordi Fabre
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Posted: Nov 04, 2020 17:43 Post subject: Popular Minerals - Violet Fluorapatite from Minas da Panasqueira |
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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)
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 | |
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Dimensions: | Specimen size: 11.6 × 7.8 × 6.5 cm / Fluorapatite crystal size: 4 × 2.1 cm |
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Tobi
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Posted: Nov 05, 2020 09:08 Post subject: Re: Popular Minerals - Violet Fluorapatite from Minas da Panasqueira |
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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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Jordi Fabre
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Posted: Nov 08, 2020 16:50 Post subject: Re: Popular Minerals - Violet Fluorapatite from Minas da Panasqueira |
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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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Jordi Fabre
Overall coordinator of the Forum
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Posts: 4900
Location: Barcelona
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Posted: Nov 08, 2020 16:54 Post subject: Popular Minerals - Hübnerite with Fluorite from Peru |
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Parallel aggregates of Hübnerite on a matrix of Quartz crystals and with coatings of small white Fluorite crystals. A rare paragenesis.
Mineral: | Hübnerite with Fluorite and Quartz |
Locality: | Huayllapon Mine (Huallapon Mine), Pasto Bueno, Pampas District, Pallasca Province, Ancash Department, Peru | |
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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 |
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Jordi Fabre
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Location: Barcelona
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Posted: Nov 13, 2020 18:08 Post subject: Popular Minerals - Malachite after Cuprite and on Azurite from Chessy |
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Sharp octahedral Malachite pseudomorphs after Cuprite crystals on Azurite crystals. A French classic.
Mineral: | Malachite after Cuprite on Azurite |
Locality: | Chessy-les-Mines, Les Bois d'Oingt, Villefranche-sur-Saône, Rhône, Auvergne-Rhône-Alpes, France | |
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Dimensions: | 3.1 × 3 × 1.6 cm |
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Jordi Fabre
Overall coordinator of the Forum
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Location: Barcelona
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Posted: Nov 16, 2020 17:21 Post subject: Popular Minerals - Rhodochrosite from Greece |
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Two rhombohedral Rhodochrosite crystals with polycrystalline growths. Implanted on a doubly terminated Quartz crystal and covered by small elongated and brilliant Arsenopyrite crystals.
Mineral: | Rhodochrosite with Quartz and Arsenopyrite |
Locality: | Cassandra Mines, Chalkidiki Prefecture, Macedonia Department, Greece | |
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Dimensions: | Specimen size: 6.4 × 4.6 × 4.4 cm / main crystal size: 3.3 × 2.6 cm |
Description: |
Former collection of René Hubin |
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Jordi Fabre
Overall coordinator of the Forum
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Location: Barcelona
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Posted: Nov 19, 2020 17:28 Post subject: Popular Minerals -. Bertrandite from Kara-Oba, Kazakhstan |
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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.
Mineral: | Bertrandite with Quartz and Pyrite |
Locality: | Kara-Oba, Betpak-Dala (Bet-Pak-Dala) Desert, Karaganda Region, Kazakhstan | |
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Dimensions: | Specimen size: 24 × 20 × 14 cm / main crystal size of Bertrandite: 1 × 0.4 cm |
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Jordi Fabre
Overall coordinator of the Forum
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Location: Barcelona
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Posted: Nov 21, 2020 17:38 Post subject: Popular Minerals - Fluorite from the Johannesschacht_Mine, Bavaria, Germany |
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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.
Mineral: | Fluorite |
Locality: | Johannesschacht Mine, Wölsendorf, Schwarzach bei Nabburg, Wölsendorf West District, Upper Palatinate/Oberpfalz, Bavaria/Bayern, Germany | |
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Dimensions: | Main crystal size: 3.9 × 1.7 cm |
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Tobi
Site Admin
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Location: Germany
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Posted: Nov 22, 2020 08:01 Post subject: Re: Popular Minerals - Fluorite from the Johannesschacht_Mine, Bavaria, Germany |
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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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Jordi Fabre
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Location: Barcelona
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Posted: Nov 22, 2020 11:44 Post subject: Re: Popular Minerals - Fluorite from the Johannesschacht_Mine, Bavaria, Germany |
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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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Jordi Fabre
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Posts: 4900
Location: Barcelona
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Posted: Nov 26, 2020 18:12 Post subject: Popular Minerals - Ludlamite from Amazonas, Brazil |
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Ludlamite crystals with parallel growths, well-defined faces and edges, and with spheroidal Siderite.
Mineral: | Ludlamite on Siderite |
Locality: | Cabeça do Cachorro claim, São Gabriel da Cachoeira, Cabeça do Cachorro area, Amazonas, Brazil | |
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Dimensions: | Specimen size: 6.6 × 4.2 × 2.4 cm / main crystal size: 1 × 0.6 cm |
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Jordi Fabre
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Location: Barcelona
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Posted: Dec 06, 2020 13:24 Post subject: Popular Minerals - Beryl (variety aquamarine) from Pakistan |
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Beryl (variety aquamarine) with very rich with terminal faces and on matrix with Albite, Schorl and leafy aggregates of Muscovite crystals.
Mineral: | Beryl (variety aquamarine) with Albite, Schorl and Muscovite |
Locality: | Gilgit-Baltistan (Northern Areas), Pakistan | |
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Dimensions: | Specimen size: 4.2 × 1.4 × 1.3 cm / main crystal size: 4.2 × 1.4 cm |
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Jordi Fabre
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Location: Barcelona
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Posted: Dec 09, 2020 16:57 Post subject: Popular Minerals - Chalcopyrite with Arsenopyrite and Siderite from Panasqueira |
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Group of large Chalcopyrite crystals on matrix with the typical curvatures seen in Panasqueira specimens. With Arsenopyrite crystals and small coatings of lenticular Siderite crystals. The Chalcopyrite is a species that in Panasqueira does not usually yield very good specimens.
Mineral: | Chalcopyrite with Arsenopyrite and Siderite |
Locality: | Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal | |
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Dimensions: | Specimen size: 13.1 × 10.4 × 7.1 cm / main crystal size: 5 × 3.3 cm |
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Jordi Fabre
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Posted: Dec 12, 2020 14:55 Post subject: Popular Minerals - Gold on Quartz from Sasar Mine, Romania |
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Group of lamellar Gold crystals with curvatures and on a Quartz matrix.
Collected between 1950 and 1960
Mineral: | Gold on Quartz |
Locality: | Sasar Mine, Baia Mare, Maramures, Romania | |
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Dimensions: | Specimen size: 6 × 3.7 × 6 cm |
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Jordi Fabre
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Location: Barcelona
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Posted: Dec 19, 2020 14:55 Post subject: Popular Minerals - Fluorapatite 'olho de boi' from Panasqueira, Portugal |
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Thick tabular Fluorapatite crystals with a concentric color zoning, a kind of growth that at Panasqueira is well-known as 'olho de boi' (ox eye).
The Fluorapatite crystals are on matrix with crystals of Arsenopyrite, pale brown lenticular Siderite, Muscovite and Marcasite and they are fluorescent under both UV light.
Mineral: | Fluorapatite with Siderite, Muscovite, Marcasite and Arsenopyrite |
Locality: | Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal | |
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Dimensions: | Whole specimen size: 15.3 × 9.2 × 5.8 cm × 2.28” / main crystal size: 2.5 × 2 cm |
Description: |
Former collection of Jordi Povill (Olesa de Montserrat, Barcelona) |
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Jordi Fabre
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Location: Barcelona
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Posted: Dec 26, 2020 18:13 Post subject: Popular Minerals - Vanadinite from Coud'a, Mibladen, Morocco |
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From a 2019 discovery at a greater depth than usual in the Coud'a area. With polycrystalline groups and parallel growths of Vanadinite crystals with a thick tabular habit, on matrix, many of them doubly terminated and with hopper growths.
Mineral: | Vanadinite |
Locality: | Coud'a, Mibladen mining district, Mibladen, Midelt, Midelt Province, Drâa-Tafilalet Region, Morocco | |
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Dimensions: | Specimen size: 6.8 × 3.7 × 6.7 cm / main crystal size: 2.2 × 1.5 cm |
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Collected in April-May 2019 |
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Jordi Fabre
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Location: Barcelona
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Posted: Dec 29, 2020 16:53 Post subject: Popular Minerals - Pyromorphite from Des Farges Mine, France |
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Arborescent growths of Pyromorphite crystals with tapered habit and hopper terminations. A French classic.
Mineral: | Pyromorphite |
Locality: | Les Farges Mine (Des Farges Mine), Ussel, Corrèze, Nouvelle-Aquitaine, France | |
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Dimensions: | Specimen size: 5 × 3.2 × 3 cm / main crystal size: 0.6 × 0.2 cm |
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Jordi Fabre
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Posted: Jan 03, 2021 14:56 Post subject: Popular Minerals - Vanadinite from the Mohamedine area, Mibladen, Morocco |
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It comes from a find made at the Mohamedine area in the first months of 2019, found much deeper than usual.
Large crystals with a thick tabular shape, a lot of them doubly terminated.
Mineral: | Vanadinite |
Locality: | Mohamedine, Coud'a, Mibladen mining district, Mibladen, Midelt, Midelt Province, Drâa-Tafilalet Region, Morocco | |
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Dimensions: | Specimen size: 12 × 8.6 × 6.7 cm / main crystal size: 1.6 × 1.6 cm |
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Jordi Fabre
Overall coordinator of the Forum
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Posts: 4900
Location: Barcelona
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Posted: Jan 05, 2021 18:25 Post subject: Popular Minerals - Calcite (variety cobaltoan) from Agoudal, Morocco |
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Irregular aggregate of crystals formed by a short prism with six faces and a flattened terminal rhombohedron, with vertical parallel growths all along the prism.
Mineral: | Calcite (variety cobaltoan) |
Locality: | Agoudal Mines, Tansifite, Agdz, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region, Morocco | |
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Dimensions: | Specimen size: 8 × 7.5 × 3.3 cm / main crystal size: 1.7 × 1.5 cm |
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Tobi
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Posted: Jan 06, 2021 06:31 Post subject: Re: Popular Minerals - Vanadinite from the Mohamedine area, Mibladen, Morocco |
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Jordi Fabre wrote: | Vanadinite
Mohamedine, Coud'a, Mibladen mining district, Mibladen, Midelt, Midelt Province, Drâa-Tafilalet Region, Morocco
Specimen size: 12 × 8.6 × 6.7 cm / main crystal size: 1.6 × 1.6 cm
It comes from a find made at the Mohamedine area in the first months of 2019, found much deeper than usual. Large crystals with a thick tabular shape, a lot of them doubly terminated. | Incredible vanadinite specimen!
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