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The label of this specimen reads "Sevilla". In the catalog of the Manchion collection it is mentioned that this piece of schorl-dravite was acquired to Dr. Joan Viñals, at the Granollers fair in 1988. For that reason, in the absence of more info, we will leave this wonderful Andalusian region as its origin. M. Calvo talks about tourmalines in pegmatites from the Los Ángeles mine, near El Castillo de las Guardas, in Seville.
Interesting example of goethite with a richness and very remarkable intense iridescences. From the classic mines of Riotinto; collected in 1985, accompanied by old label.
Rich group of galena crystals those show facets of the cube, octahedron and dodecahedron in the edges. Very bright and interpenetrated, with a good size. They are accompanied by small crystals of quartz and pyrite. Specimens from these classic mines are difficult to see today. These mines are located in the mining area of La Carolina; the village of El Guindo is located about 8 kilometers from La Carolina, on the road to the also mining town of El Centenillo. The town is located next to the mine shafts of El Guindo and La Manzana, which constituted two of the most important works in the area.
Montejícar is located midway between Granada and Jaén, in the northern limit of the province of Granada. This area is known among mineral collectors for the excellent quartz, smoked to morion, doubly terminated and with very poorly developed prism faces, which gives them a characteristic dipyramidal shape. These specimens are found in banded gypsum and marl from the Trias in a Keuper facies characteristic of the Cortijo Cañadas, in the N of the Montejícar municipal district. In the area there are some interesting ruins of plaster kilns.
Montejícar is located midway between Granada and Jaén, in the northern limit of the province of Granada. This area is known among mineral collectors for the excellent quartz, smoked to morion, doubly terminated and with very poorly developed prism faces, which gives them a characteristic dipyramidal shape. These specimens are found in banded gypsum and marl from the Trias in a Keuper facies characteristic of the Cortijo Cañadas, in the N of the Montejícar municipal district. In the area there are some interesting ruins of plaster kilns.
Montejícar is located midway between Granada and Jaén, in the northern limit of the province of Granada. This area is known among mineral collectors for the excellent quartz, smoked to morion, doubly terminated and with very poorly developed prism faces, which gives them a characteristic dipyramidal shape. These specimens are found in banded gypsum and marl from the Trias in a Keuper facies characteristic of the Cortijo Cañadas, in the N of the Montejícar municipal district. In the area there are some interesting ruins of plaster kilns.
Montejícar is located midway between Granada and Jaén, in the northern limit of the province of Granada. This area is known among mineral collectors for the excellent quartz, smoked to morion, doubly terminated and with very poorly developed prism faces, which gives them a characteristic dipyramidal shape. These specimens are found in banded gypsum and marl from the Trias in a Keuper facies characteristic of the Cortijo Cañadas, in the N of the Montejícar municipal district. In the area there are some interesting ruins of plaster kilns.
A rich group of scalenohedral calcite crystals, very acute, translucent, of good size and from this classic Andalusian locality. Not very common in these mines. Under the ultraviolet (LW) light they present a very remarkable red-pink fluorescence.
Group of blue quartz crystals, bright, some of them forming complex groups and other ones isolated, doubly terminated. They show short prisms along with developed terminal rhombohedral faces. Intense blue gray color due to amphibole inclusions. The matrix is partially covered with magnesium-riebeckite fibers. Very aesthetic specimen.
These hematite specimens belong from ancient finds (ca 1980s) in a mine located on the property of the Piquín farmhouse. In this huge size sample we can see an aesthetic botryoidal aggregates, with an exceptional luster. Even botryoidal "negative" cavities are observed, inward. In the fracture zones of the specimen, radial fibrous aggregates forming botrioids are revealed. A piece of quality without equal and very difficult to find nowadays.
Druse of trapezohedral crystals of andradite from this classic Spanish locality. Intense brilliance, with colors between brown to reddish. On a granatite with epidote. This is a specimen with pedigree from the Gustav Beck collection.
Very aesthetic stalactic-botryoidal formation of goethite, with some iridescence. This specimen does not show those colors seen in the samples of this locality since it has not been manually husked. It is presented in the original shape with which it appears in the deposit, nowadays very difficult to find.
Almandine crystal group, rich in faces, with forms of the dodecahedron, and rounded edges. Partially covered by gold mica. A classic of Spanish mineralogy, nowadays very difficult to see.
Near to a floater, this specimen shows tabular crystals of baryte in parallel growth, in book-shape, very brilliant, transparent and richly faceted. Between colorless to slightly gray due to inclusions. It comes from a locality that is rarely represented in collections (also in Spanish ones).
Huge size almandine crystal, rich in faces, with forms of the dodecahedron, and rounded edges. A classic of Spanish mineralogy, nowadays very difficult to see.
Good sized almandine crystal, with defined faces, with forms of the dodecahedron and rounded edges. It is partially coated by mica. It presents molds of contact with other crystals those growth with. A former specimens, nowadays very difficult to get, a classic for the Spanish mineralogy.
Almandine crystal, rich in faces, with forms of the dodecahedron, and rounded edges. A classic of Spanish mineralogy, nowadays very difficult to see.
Druse of small torbernite crystals forming rossetes of tabular crystals with a green color.
A very rich group of goethitized pyrite crystals, covered by a thin layer of limonite, from this classic Spanish locality. Defined crystals and orange color. Good size specimen.
An aesthetic globular aggregate of prehnite, disposed very aerially on a matrix covered by several needles of actinolite. Translucent, with a green color with yellowish tones. From a classic Spanish locality.
Curious specimens formed by numerous slightly yellow prismatic gypsum crystals (var. selenite) very transparent and on which have been deposited small cubic halite crystals, some of them show hoppered growth, brilliant and translucent to white color. A unique neoformed and very aesthetic piece.
A very rich group of prismatic crystals, some almost acicular, of brochantite with an intense green colour and good brilliance and transparence. Nice to be displayed and enjoyed under magnifying glass. Disposed in the baryte cavities. SEM-EDS analysis results will be sent to the buyer.
A very rich group of prismatic crystals, some almost acicular, of brochantite with an intense green colour and good brilliance and transparence. Accompanied by groups of atacamite crystals with tabular shape and thicker prism, with a deep green color and transparence, easy to distinguish. Nice to be displayed and enjoyed under magnifying glass. SEM-EDS analysis results will be sent to the buyer.
Group of very sharp trapezohedral analcime crystals, good brilliance and with the usual transparency for the species. They are disposed in a cavity of the volcanic rock covered by calcite. Very interesting specimen from a poorly represented locality in collections.
Group of rhombohedral calcite crystals with a complex combination showing defined faces and rounded edges. Translucent and very curious waxy luster. On them various prehnite globular aggregates formed by radial growths. A very unusual mineralogical curiosity.