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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5088
Location: Barcelona
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 Posted: Jun 20, 2025 16:34 Post subject: Azurite on Volborthite from Milpillas Mine / #MVM (Minerals - Virtual Museum) Collection |
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#MVM (Minerals - Virtual Museum) / more information about the piece with this link
| Mineral: | Azurite on Volborthite |
| Locality: | | Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora, Mexico |  |
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| Dimensions: | Azurite crystal size: 1 × 0.3 cm |
| Description: |
A very sharp, doubly terminated Azurite crystal on Volborthite, an association we must consider something very special, especially considering that the Milpillas Volborthite specimens are probably the world’s best for their quality, luster, and crystal size, and are now considered a new standard for this species.
The specimen has been noted and photographed in the monograph 'The Milpillas Mine' of The Mineralogical Record magazine, on page 620, volume 52, number 5, September–October 2021 |
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2914 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5088
Location: Barcelona
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| Posted: Jun 23, 2025 17:03 Post subject: Proustite from Chañarcillo, Chile / #MVM (Minerals - Virtual Museum) Collection |
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#MVM (Minerals - Virtual Museum) / more information about the piece with this link
| Mineral: | Proustite |
| Locality: | | Chañarcillo, Copiapó Province, Atacama Region, Chile | |
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| Dimensions: | 3 × 1.8 × 2 cm |
| Description: |
Proustite crystals with a prismatic habit and sharp terminations. Between translucent and transparent and with very vivid color.
Chañarcillo is one of the most well-known orebodies for the species.
Former collection Moutet (Marseille) |
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2794 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5088
Location: Barcelona
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| Posted: Jul 02, 2025 13:38 Post subject: Cuprite on Calcite from Congo D. R. / #MVM (Minerals - Virtual Museum) Collection |
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#MVM (Minerals - Virtual Museum) / more information about the piece with this link
| Mineral: | Cuprite on Calcite |
| Locality: | | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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| Dimensions: | 3.9 × 2.7 × 2.5 cm |
| Description: |
| Very sharp and isolated Cuprite crystals, one of them clearly dominant, very aerial, with the forms of the octahedron, the rhombododecahedron and the cube. Translucent, very lustrous and with a very deep red color. On matrix, with small rhombohedral Calcite crystals. |
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2468 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5088
Location: Barcelona
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| Posted: Jul 05, 2025 05:04 Post subject: Volborthite from Milpillas Mine, Mexico / #MVM (Minerals - Virtual Museum) Collection |
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#MVM (Minerals - Virtual Museum) / more information about the piece with this link
| Mineral: | Volborthite with Malachite and Azurite and on Dickite |
| Locality: | | Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora, Mexico | |
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| Dimensions: | Specimen size: 4.9 × 3.5 × 2.2 cm / main crystal size: 3.3 × 1.4 cm |
| Description: |
The Volborthites from Milpillas, found around 2015, are among the most spectacular discoveries in the mineral world. Overall, they are of exceptional quality, and in many respects, this large rosette of crystals with malachite on matrix stands out above the rest.
The specimen has been reviewed, photographed and published in the magazine ‘Mineral Up’ on page 69 of the 2017/01 edition. |
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2366 Time(s) |
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| Mineral: | Volborthite with Malachite and Azurite and on Dickite |
| Locality: | | Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora, Mexico | |
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| Dimensions: | Specimen size: 4.9 × 3.5 × 2.2 cm / main crystal size: 3.3 × 1.4 cm |
| Description: |
| Back view of the same specimen |
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2374 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5088
Location: Barcelona
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| Posted: Jul 06, 2025 11:07 Post subject: Fluorite, Baryte from Moscona Mine, Spain / #MVM (Minerals - Virtual Museum) Collection |
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#MVM (Minerals - Virtual Museum) / more information about the piece with this link
| Mineral: | Fluorite with Baryte and Quartz |
| Locality: | | Moscona Mine, El Llano, Solís, Corvera de Asturias, Comarca Avilés, Principality of Asturias (Asturias), Spain | |
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| Dimensions: | 12.4 × 8.5 × 4.6 cm |
| Description: |
Druse of sharp Fluorite crystals, translucent, with excellent luster and a deep, uniform color. The crystal faces are selectively coated with tabular white Baryte crystals and microcrystals of Quartz, creating a luminous contrast.
This specimen comes from the collection of Miguel David Martínez Pérez (catalog number 2651). The color ranks among the finest known from this locality. |
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2309 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5088
Location: Barcelona
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| Posted: Jul 10, 2025 13:45 Post subject: Veszelyite from Sanguozhuang, China / #MVM (Minerals - Virtual Museum) Collection |
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#MVM (Minerals - Virtual Museum) / more information about the piece with this link
| Mineral: | Veszelyite |
| Locality: | | Sanguozhuang, Dongchuan District, Kunming Prefecture, Yunnan Province, China | |
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| Dimensions: | 1.6 × 1.2 × 1 cm |
| Description: |
Elegant miniature, very airy in appearance, composed of Veszelyite crystals grouped into spheroidal shapes and arranged in a fan-like structure. The crystals are sharp, well-formed, and display an intense, uniform color with excellent luster.
From Sanguozhuang, China, a lead and zinc mining locality that is also the type locality for five new mineral species. |
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2141 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5088
Location: Barcelona
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| Posted: Jul 13, 2025 12:19 Post subject: Lazurite (lapis lazuli) from Afghanistan / #MVM (Minerals - Virtual Museum) Collection |
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#MVM (Minerals - Virtual Museum) / more information about the piece with this link
| Mineral: | Lazurite (lapis lazuli variety) on Calcite |
| Locality: | | Ladjuar Medam, Sar-e Sang, Koksha Valley, Khash & Kuran Wa Munjan Districts, Badakhshan Province, Afghanistan | |
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| Dimensions: | 5.3 × 4.3 × 5.1 cm |
| Description: |
Dodecahedral Lazurite crystal with very well-defined faces and edges, featuring a deep, uniform color, set on a Calcite matrix.
This specimen was part of the Carles Manresa collection. |
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1986 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5088
Location: Barcelona
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| Posted: Jul 15, 2025 13:05 Post subject: Sphalerite with Calcite from Áliva, Spain / #MVM (Minerals - Virtual Museum) Collection |
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#MVM (Minerals - Virtual Museum) / more information about the piece with this link
| Mineral: | Sphalerite with Calcite |
| Locality: | | Áliva Mine (Las Mánforas Mine), Áliva mining area, Camaleño, Comarca Liébana, Cantabria, Spain | |
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| Dimensions: | 4.2 × 3.1 × 1.9 cm |
| Description: |
Group of Sphalerite crystals with sharp crystal forms, ranging from translucent to transparent, with good luster and a very unusual green coloration for specimens from this locality.
It comes from the collection of Andrés Jiménez Shelly and was previously part of the collection of Carlos Prieto Paramio. |
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1683 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5088
Location: Barcelona
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| Posted: Jul 16, 2025 12:44 Post subject: Architectural Spinel from Vietnam / #MVM (Minerals - Virtual Museum) Collection |
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#MVM (Minerals - Virtual Museum) / more information about the piece with this link
| Mineral: | Spinel with Clintonite |
| Locality: | | An Phu, Luc Yen, Yenbai Province, Vietnam | |
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| Dimensions: | 5.2 × 3.9 × 3 cm |
| Description: |
A floater group of sharply defined octahedral Spinel crystals, translucent and lustrous, with an intense pink hue and small white coatings of Clintonite.
The overall crystal architecture is fascinating. |
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1369 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5088
Location: Barcelona
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| Posted: Jul 20, 2025 12:11 Post subject: Fluorite on Quartz from Berbes, Spain / #MVM (Minerals - Virtual Museum) Collection |
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#MVM (Minerals - Virtual Museum) / more information about the piece with this link
| Mineral: | Fluorite on Quartz |
| Locality: | | Berbes mining area, Berbes, Ribadesella, Comarca Oriente, Principality of Asturias (Asturias), Spain | |
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| Dimensions: | 4.2 × 2.8 × 1.4 cm |
| Description: |
Aerial and well-isolated Fluorite crystals, sharp, with excellent transparency and luster, and displaying distinct geometric color zoning in various shades of violet.
Set on matrix with coatings of small Quartz crystals. |
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| Viewed: |
930 Time(s) |
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| Mineral: | Fluorite on Quartz |
| Locality: | | Berbes mining area, Berbes, Ribadesella, Comarca Oriente, Principality of Asturias (Asturias), Spain | |
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| Dimensions: | main crystal size: 0.6 × 0.5 cm |
| Description: |
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929 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5088
Location: Barcelona
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| Posted: Jul 22, 2025 17:02 Post subject: Pyrite from Elba Island, Italy / #MVM (Minerals - Virtual Museum) Collection |
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#MVM (Minerals - Virtual Museum) / more information about the piece with this link
| Mineral: | Hematite on Pyrite |
| Locality: | | Elba Island, Livorno Province, Tuscany, Italy | |
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| Dimensions: | 6 × 5.3 × 4.2 cm |
| Description: |
Complete floater crystal of Pyrite with dominant crystal forms of the positive pyritohedron, identified by the orientation of the fine striations on its faces, and truncated by small octahedral faces. The crystal displays a deep striation on its lower part, left by lamellar Hematite crystals, some of which are still present on the specimen.
It comes from the former collection of Moutet from Marseille and includes a label from the prestigious Deyrolle house in Paris, where Moutet acquired it many years ago. |
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648 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5088
Location: Barcelona
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| Posted: Jul 24, 2025 13:31 Post subject: Pezzottaite from Madagascar / #MVM (Minerals - Virtual Museum) Collection |
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#MVM (Minerals - Virtual Museum) / more information about the piece with this link
| Mineral: | Pezzottaite with Schorl and Quartz |
| Locality: | | Sakavalana Mine, Ambatovita, Mandrosonoro, Ambatofinandrahana District, Amoron'i Mania Region, Madagascar | |
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| Dimensions: | main crystal size: 0.6 × 0.6 cm |
| Description: |
Very sharp crystal of Pezzottaite, a rare species of the Beryl Group, translucent, with a very intense and uniform color, set on a Quartz matrix with short, elongated Schorl crystals.
It comes from its type locality, Sakavalana Mine. |
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491 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1246
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| Posted: Jul 25, 2025 14:31 Post subject: Re: #MVM (Minerals - Virtual Museum) Collection |
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Until now, I thought that the large size of the cesium cation was responsible for the low elongation of morganite. It develops more laterally than along the c axis.
Pezzotaite confirms this fact.
However, samples from the new deposit (Madagascar) show greater elongation than morganite.
I have no references, but these rather colorless prisms are supposed to contain Cs. Furthermore, these prisms remain rather colorless, with the color concentrated at the ends.
Can you help me understand this?
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5088
Location: Barcelona
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| Posted: Jul 26, 2025 13:46 Post subject: Hematite from Les Vosges Massif, France / #MVM (Minerals - Virtual Museum) Collection |
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#MVM (Minerals - Virtual Museum) / more information about the piece with this link
| Mineral: | Hematite with Quartz (variety smoky) |
| Locality: | | Brézouard, Les Vosges Massif, Lapoutroie, Ribeauvillé, Haut-Rhin, Grand Est, France | |
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| Dimensions: | Overall specimen size: 9.3 × 8.4 × 4.7 cm |
| Description: |
Vug with thick tabular crystals of bright Hematite. In matrix, with small Quartz crystals (smoky variety)
The specimen, from a little-known French locality, comes from the Alain Martaud collection. |
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264 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5088
Location: Barcelona
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| Posted: Jul 28, 2025 13:12 Post subject: Cinnabar from Nikitovka deposit, Ukraine / #MVM (Minerals - Virtual Museum) Collection |
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#MVM (Minerals - Virtual Museum) / more information about the piece with this link
| Mineral: | Cinnabar on Quartz |
| Locality: | | Nikitovka deposit, Horlivka (Gorlovka), Horlivka Raion, Donetsk Oblast, Ukraine | |
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| Dimensions: | main crystal size: 0.2 × 0.2 cm |
| Description: |
The specimen comes from a little-known locality for cinnabars of this quality.
In this case, it forms isolated aggregates on matrix, consisting of small, twinned, acute rhombohedral crystals that are transparent, bright, and have a very intense red color.
It was part of the Tim Welting collection. |
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105 Time(s) |
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