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Popular Minerals
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Jordi Fabre
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PostPosted: Sep 18, 2020 14:12    Post subject: Popular Minerals - Octahedral Fluorite from the Mont Blanc, France  

Group of octahedral Fluorite crystals with polycrystalline growths on an Albite matrix. A classic Alpine specimen.


Octahedral Fluorite on Albite - Aiguille Verte_Auvergne-Rhône-Alpes_France.jpg
 Mineral: Fluorite on Albite
 Locality:
Aiguille Verte, Mont Blanc Massif, Chamonix, Haute-Savoie, Auvergne-Rhône-Alpes, France
 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
 Viewed:  1440 Time(s)

Octahedral Fluorite on Albite - Aiguille Verte_Auvergne-Rhône-Alpes_France.jpg


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PostPosted: Sep 20, 2020 16:56    Post subject: Popular Minerals - Twinned Cerussite from Spain  

Floater growth of flattened reticulated prismatic twins of Cerussite with a rosette-like appearance different from other specimens commonly seen from this locality.


Twinned Cerussite - Luis Mine_Castilla-La Mancha_Spain.jpg
 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
 Dimensions: Specimen size: 4.7 × 3.8 × 2.9 cm / main crystal size: 3.5 × 0.6 cm
 Description:
Minor fluorescence under short UV
 Viewed:  1345 Time(s)

Twinned Cerussite - Luis Mine_Castilla-La Mancha_Spain.jpg


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PostPosted: Sep 22, 2020 16:12    Post subject: Popular Minerals - Silver from La Encantada Mine, Coahuila, Mexico  

Floater aggregate with polycrystalline growths of hexahedral Silver crystals with very defined faces and edges and with small dark coatings of Acanthite.


Silver - Encantada Mine_Coahuila_Mexico.jpg
 Mineral: Silver
 Locality:
Encantada Mine, La Encantada, Municipio Melchor Múzquiz, Coahuila (Coahuila de Zaragoza), Mexico
 Dimensions: Specimen size: 3.5 × 3 × 2.2 cm / main crystal size: 0.3 × 0.3 cm
 Description:
Former collection of Carles Curto
 Viewed:  1223 Time(s)

Silver - Encantada Mine_Coahuila_Mexico.jpg


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PostPosted: Sep 26, 2020 10:55    Post subject: Popular Minerals - Stokesite from Valdemanco, Madrid, Spain  

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.



Stokesite with Albite - Isabel Quarry_Community of Madrid_Spain.jpg
 Mineral: Stokesite on Microcline with Albite
 Locality:
Isabel Quarry (La Saludadora Quarry), La Cabrera pluton, Valdemanco, Comarca Sierra de Guadarrama, Madrid, Community of Madrid, Spain
 Dimensions: Specimen size: 1 × 0.8 × 1 cm / main crystal size: 0.3 × 0.2 cm
 Description:
 Viewed:  1154 Time(s)

Stokesite with Albite - Isabel Quarry_Community of Madrid_Spain.jpg


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PostPosted: Sep 28, 2020 14:18    Post subject: Popular Minerals - Prehnite from La Combe de La Selle, France  

Prehnite crystals with very marked curvatures and polycrystalline growths. A French classic from one of the most typical localities for the species.


Prehnite with Epidote and Albite - La Combe de la Selle,_Auvergne-Rhône-Alpes_France.jpg
 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
 Dimensions: Specimen size: 4.3 × 3.4 × 2.9 cm / main crystal size: 1.2 × 1 cm
 Description:
 Viewed:  1071 Time(s)

Prehnite with Epidote and Albite - La Combe de la Selle,_Auvergne-Rhône-Alpes_France.jpg


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PostPosted: Sep 29, 2020 16:20    Post subject: Popular Minerals - Copper from Keweenaw, Michigan, USA  

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.



Copper - Keweenaw County_Michigan_USA.jpg
 Mineral: Copper
 Locality:
Keweenaw County, Michigan, USA
 Dimensions: Specimen size: 2.7 × 2.2 × 2.2 cm
 Description:
Photo: Joaquim Callén
 Viewed:  996 Time(s)

Copper - Keweenaw County_Michigan_USA.jpg


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PostPosted: Oct 01, 2020 13:03    Post subject: Popular Minerals - Galena from the Ballard Mine, Kansas, USA  

Group of cuboctohedral crystals of Galena that have polycrystalline and partially skeletal growths.


Galena - Ballard Mine_Kansas_USA.jpg
 Mineral: Galena
 Locality:
Ballard Mine, Baxter Springs, Picher Field, Tri-State District, Cherokee County, Kansas, USA
 Dimensions: Specimen size: 9.4 × 7.2 × 4.4 cm / main crystal size: 3 × 3.1 cm
 Description:
 Viewed:  915 Time(s)

Galena - Ballard Mine_Kansas_USA.jpg


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PostPosted: Oct 05, 2020 13:34    Post subject: Popular Minerals - Baryte from Bou Nahas Mine, Morocco  

Floater aggregate of parallel growths of thin tabular Baryte crystals and partially coated by white aggregates of Quartz microcrystals and small Pyrite crystals.


Baryte with Quartz and Pyrite - Bou Nahas Mine_Drâa-Tafilalet Region_Morocco.jpg
 Mineral: Baryte with Quartz and Pyrite
 Locality:
Bou Nahas Mine, Oumjrane mining area, Alnif, Tinghir Province, Drâa-Tafilalet Region, Morocco
 Dimensions: Specimen size: 8.1 × 7.4 × 3.6 cm
 Description:
 Viewed:  759 Time(s)

Baryte with Quartz and Pyrite - Bou Nahas Mine_Drâa-Tafilalet Region_Morocco.jpg


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PostPosted: Oct 06, 2020 07:55    Post subject: Re: Popular Minerals - Galena from the Ballard Mine, Kansas, USA  

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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PostPosted: Oct 07, 2020 11:52    Post subject: Popular Minerals - Fluorite from the Llamas Quarry, Asturias, Spain  

Group of Fluorite crystals with clearly dominant cube faces markedly beveled by the dodecahedron. A 'modern classic' from Spain.


Fluorite - Llamas Quarry_Principality of Asturias_Spain.jpg
 Mineral: Fluorite
 Locality:
Llamas Quarry, Obdulia vein, Caravia mining area, Las Cabañas, Duyos, Caravia, Comarca Oriente, Asturias, Principality of Asturias, Spain
 Dimensions: Specimen size: 3.6 × 3 × 2.8 cm / main crystal size: 1.5 × 1 cm
 Description:
 Viewed:  627 Time(s)

Fluorite - Llamas Quarry_Principality of Asturias_Spain.jpg


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PostPosted: Oct 10, 2020 16:00    Post subject: Popular Minerals - Calcite, Fluorite and Pyrite from Villabona Mines, Spain  

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.


Calcite with Fluorite and Pyrite - Villabona Mines_Asturias_Spain.jpg
 Mineral: Calcite, Fluorite and Pyrite
 Locality:
Villabona Mines, Barrio de la Estación, Villabona, Llanera, Comarca del Nora, Asturias, Principality of Asturias, Spain
 Description:
Specimen size: 7.8 × 5.4 × 5.6 cm / main crystal size: 5.4 × 3.6 cm
 Viewed:  507 Time(s)

Calcite with Fluorite and Pyrite - Villabona Mines_Asturias_Spain.jpg


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PostPosted: Oct 13, 2020 16:00    Post subject: Popular Minerals - Andradite (variety topazolite) from Madagascar  

Brown greenish Andradite crystals (variety topazolite) on matrix with the dominant forms of the rhombododecahedron combined with those of the trapezohedron.


Andradite variety topazolite with Calcite - Antetezambato_Madagascar.jpg
 Mineral: Andradite (variety topazolite)
 Locality:
Antetezambato outcrop, Antetezambato, Maherivaratra Commune, Ambanja District, Antsiranana Province, Madagascar
 Dimensions: Crystal size: 1.6 × 1.2 cm
 Description:
 Viewed:  401 Time(s)

Andradite variety topazolite with Calcite - Antetezambato_Madagascar.jpg


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PostPosted: Oct 17, 2020 13:07    Post subject: Popular Minerals - Olivenite from the Milpillas Mine, Mexico  

Isolated crystal of Olivenite on matrix with very well defined faces and edges and perfect terminal faces, lustrous and very deep olive green.


Olivenite - Milpillas Mine_Sonora_Mexico.jpg
 Mineral: Olivenite
 Locality:
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora, Mexico
 Dimensions: Crystal size: 1.2 × 0.2 cm
 Description:
Photo: Joaquim Callén
 Viewed:  211 Time(s)

Olivenite - Milpillas Mine_Sonora_Mexico.jpg


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PostPosted: Oct 18, 2020 15:47    Post subject: Popular Minerals - Baryte from La Beltraneja, Almería, Spain  

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


Baryte - El Telegrama adit, Almeria, Spain.jpg
 Mineral: Baryte
 Locality:
El Telegrama adit, La Beltraneja concession, Cortijuelo Mines, Bacares, Comarca Valle del Almanzora, Almería, Andalusia, Spain
 Dimensions: Specimen size: 10.2 × 7 × 3.7 cm / main crystal size: 2 × 1.8 cm
 Description:
 Viewed:  102 Time(s)

Baryte - El Telegrama adit, Almeria, Spain.jpg


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Niels Brouwer




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PostPosted: Oct 18, 2020 16:22    Post subject: Re: Popular Minerals  

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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