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Jordi Fabre
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Joined: 07 Aug 2006
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Location: Barcelona
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Posted: Sep 18, 2020 14:12 Post subject: Popular Minerals - Octahedral Fluorite from the Mont Blanc, France |
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Group of octahedral Fluorite crystals with polycrystalline growths on an Albite matrix. A classic Alpine specimen.
Mineral: | Fluorite on Albite |
Locality: | Aiguille Verte, Mont Blanc Massif, Chamonix, Haute-Savoie, Auvergne-Rhône-Alpes, France | |
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Dimensions: | Specimen size: 5.3 × 4.6 × 2.6 cm / main crystal size: 2 × 1.8 cm |
Description: |
Fluorescent long UV & minor fluorescence short UV |
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15125 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Sep 20, 2020 16:56 Post subject: Popular Minerals - Twinned Cerussite from Spain |
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Floater growth of flattened reticulated prismatic twins of Cerussite with a rosette-like appearance different from other specimens commonly seen from this locality.
Mineral: | Cerussite (twinned) |
Locality: | Luis Mine, 88 m.↓ Norte vein, Del General Mines, Cabezarrubias del Puerto, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha, Spain | |
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Dimensions: | Specimen size: 4.7 × 3.8 × 2.9 cm / main crystal size: 3.5 × 0.6 cm |
Description: |
Minor fluorescence under short UV |
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15009 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Sep 22, 2020 16:12 Post subject: Popular Minerals - Silver from La Encantada Mine, Coahuila, Mexico |
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Floater aggregate with polycrystalline growths of hexahedral Silver crystals with very defined faces and edges and with small dark coatings of Acanthite.
Mineral: | Silver |
Locality: | Encantada Mine, La Encantada, Municipio Melchor Múzquiz, Coahuila (Coahuila de Zaragoza), Mexico | |
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Dimensions: | Specimen size: 3.5 × 3 × 2.2 cm / main crystal size: 0.3 × 0.3 cm |
Description: |
Former collection of Carles Curto |
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14890 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Sep 26, 2020 10:55 Post subject: Popular Minerals - Stokesite from Valdemanco, Madrid, Spain |
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Aggregate of very sharp, colorless and transparent Stokesite crystals on a little Microcline matrix with Albite.
These Stokesites, found in 1999 and featured in an article in The Mineralogical Record in 2012, are considered the best crystallized Stokesites in the world.
Mineral: | Stokesite on Microcline with Albite |
Locality: | Isabel Quarry (La Saludadora Quarry), La Cabrera pluton, Valdemanco, Comarca Sierra de Guadarrama, Community of Madrid, Spain | |
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Dimensions: | Specimen size: 1 × 0.8 × 1 cm / main crystal size: 0.3 × 0.2 cm |
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15046 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Sep 28, 2020 14:18 Post subject: Popular Minerals - Prehnite from La Combe de La Selle, France |
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Prehnite crystals with very marked curvatures and polycrystalline growths. A French classic from one of the most typical localities for the species.
Mineral: | Prehnite with Albite and Epidote |
Locality: | La Combe de la Selle, Saint-Christophe-en-Oisans, Le Bourg d'Oisans Comune, Isère, Auvergne-Rhône-Alpes, France | |
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Dimensions: | Specimen size: 4.3 × 3.4 × 2.9 cm / main crystal size: 1.2 × 1 cm |
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14740 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Sep 29, 2020 16:20 Post subject: Popular Minerals - Copper from Keweenaw, Michigan, USA |
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Floater group of very well defined dodecahedral crystals of Copper with fine alignments formed by the recrystallization of Copper microcrystals.
With a little matrix and casts of vanished Quartz crystals. An American classic.
Mineral: | Copper |
Locality: | Keweenaw County, Michigan, USA | |
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Dimensions: | Specimen size: 2.7 × 2.2 × 2.2 cm |
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14677 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Oct 01, 2020 13:03 Post subject: Popular Minerals - Galena from the Ballard Mine, Kansas, USA |
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Group of cuboctohedral crystals of Galena that have polycrystalline and partially skeletal growths.
Mineral: | Galena |
Locality: | Ballard Mine, Baxter Springs, Picher Field, Tri-State District, Cherokee County, Kansas, USA | |
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Dimensions: | Specimen size: 9.4 × 7.2 × 4.4 cm / main crystal size: 3 × 3.1 cm |
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14579 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Oct 05, 2020 13:34 Post subject: Popular Minerals - Baryte from Bou Nahas Mine, Morocco |
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Floater aggregate of parallel growths of thin tabular Baryte crystals and partially coated by white aggregates of Quartz microcrystals and small Pyrite crystals.
Mineral: | Baryte with Quartz and Pyrite |
Locality: | Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region, Morocco | |
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Dimensions: | Specimen size: 8.1 × 7.4 × 3.6 cm |
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14398 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4112
Location: Germany
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Posted: Oct 06, 2020 07:55 Post subject: Re: Popular Minerals - Galena from the Ballard Mine, Kansas, USA |
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Jordi Fabre wrote: | Group of cuboctohedral crystals of Galena that have polycrystalline and partially skeletal growths.
Mineral: Galena
Ballard Mine, Baxter Springs, Picher Field, Tri-State District, Cherokee County, Kansas, USA
Specimen size: 9.4 × 7.2 × 4.4 cm / main crystal size: 3 × 3.1 cm | Wonderful Picher Field classic, I like it ❤
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Oct 07, 2020 11:52 Post subject: Popular Minerals - Fluorite from the Llamas Quarry, Asturias, Spain |
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Group of Fluorite crystals with clearly dominant cube faces markedly beveled by the dodecahedron. A 'modern classic' from Spain.
Mineral: | Fluorite |
Locality: | Llamas Quarry, Obdulia vein, Caravia mining area, Las Cabañas, Duyos, Caravia, Comarca Oriente, Principality of Asturias (Asturias), Spain | |
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Dimensions: | Specimen size: 3.6 × 3 × 2.8 cm / main crystal size: 1.5 × 1 cm |
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14301 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Oct 10, 2020 16:00 Post subject: Popular Minerals - Calcite, Fluorite and Pyrite from Villabona Mines, Spain |
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Polycrystalline growths of complex Calcite crystals with dominant scalenohedral forms. The specimen comes from the Villabona Mine, which has not produced many quality specimens and should not be confused with the much more prolific Solís Mine.
Mineral: | Calcite, Fluorite and Pyrite |
Locality: | Villabona Mines, Barrio de la Estación, Villabona, Llanera, Comarca del Nora, Principality of Asturias (Asturias), Spain | |
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Description: |
Specimen size: 7.8 × 5.4 × 5.6 cm / main crystal size: 5.4 × 3.6 cm |
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14141 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Oct 13, 2020 16:00 Post subject: Popular Minerals - Andradite (variety topazolite) from Madagascar |
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Brown greenish Andradite crystals (variety topazolite) on matrix with the dominant forms of the rhombododecahedron combined with those of the trapezohedron.
Mineral: | Andradite (variety topazolite) |
Locality: | Antetezambato outcrop, Antetezambato, Maherivaratra Commune, Ambanja District, Antsiranana Province, Madagascar | |
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Dimensions: | Crystal size: 1.6 × 1.2 cm |
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14035 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Oct 17, 2020 13:07 Post subject: Popular Minerals - Olivenite from the Milpillas Mine, Mexico |
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Isolated crystal of Olivenite on matrix with very well defined faces and edges and perfect terminal faces, lustrous and very deep olive green.
Mineral: | Olivenite |
Locality: | Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora, Mexico | |
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Dimensions: | Crystal size: 1.2 × 0.2 cm |
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13863 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Oct 18, 2020 15:47 Post subject: Popular Minerals - Baryte from La Beltraneja, Almería, Spain |
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Group of very sharp laminar crystals with small rhombohedral white Calcite crystals. The sample is from the initial finds of the locality between September 2002 and March 2003
Mineral: | Baryte |
Locality: | El Telegrama adit, La Beltraneja concession, Cortijuelo Mines, Bacares, Comarca Valle del Almanzora, Almería, Andalusia, Spain | |
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Dimensions: | Specimen size: 10.2 × 7 × 3.7 cm / main crystal size: 2 × 1.8 cm |
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13777 Time(s) |
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Niels Brouwer
Joined: 26 Sep 2016
Posts: 54
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Posted: Oct 18, 2020 16:22 Post subject: Re: Popular Minerals |
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Wow, that's really a spectacular specimen Jordi! I love how delicate those thin baryte crystals are.
Have you seen any of the blue ones from that locality?
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Jordi Fabre
Overall coordinator of the Forum
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Posts: 4902
Location: Barcelona
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Posted: Oct 23, 2020 16:30 Post subject: Re: Popular Minerals |
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Niels Brouwer wrote: | ...Have you seen any of the blue ones from that locality? |
Yes, I do. There are not many but at the beginning of the find some came out.
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Oct 23, 2020 16:36 Post subject: Popular Minerals - Ullmanite |
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Matrix group of Ullmannite crystals of cubic habit, with well defined faces and edges.
Mineral: | Ullmanite |
Locality: | Souss-Massa Region, Morocco | |
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Description: |
Specimen size: 4.7 × 2.5 × 2.6 cm / main crystal size: 0.7 × 0.5 cm |
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13555 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Oct 24, 2020 16:27 Post subject: Popular Minerals - Fluorite from the Llamas Quarry, Asturias, Spain |
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Fluorite crystals, one of them clearly dominant and very aerial, with a cubic habit beveled by the dodecahedron. On matrix, with white Quartz crystals.
Mineral: | Fluorite |
Locality: | Llamas Quarry, Obdulia vein, Caravia mining area, Las Cabañas, Duyos, Caravia, Comarca Oriente, Principality of Asturias (Asturias), Spain | |
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Dimensions: | Specimen size: 8.1 × 4.8 × 6.4 cm / main crystal size: 1.9 × 1.8 cm |
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13493 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Oct 25, 2020 15:04 Post subject: Popular Minerals - Diaspore from Turkey |
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A large doubly terminated scepter and stepped crystal of Diaspore with polycrystalline terminations partially covered in some areas by leafy growths of Margarite.
Mineral: | Diaspore with Margarite |
Locality: | Ilbir Mountain, Pinarcik, Milâs District, Muğla Province, Aegean Region, Turkey | |
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Dimensions: | 14.9 × 3.6 × 1.7 cm |
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13351 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Nov 01, 2020 14:53 Post subject: Popular Minerals - Azurite from Chessy-les-Mines, France |
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Group of very sharp Azurite crystals with a lenticular habit, with fine polycrystalline growths, very well defined faces and edges and more vivid color than usual in Chessy specimens. This piece is from a find from 1820 and is from the type locality for the species.
Mineral: | Azurite |
Locality: | Chessy-les-Mines, Les Bois d'Oingt, Villefranche-sur-Saône, Rhône, Auvergne-Rhône-Alpes, France | |
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Description: |
Specimen size: 4.7 × 2.6 × 2.8 cm / main crystal size: 3 × 1.6 cm |
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13160 Time(s) |
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