The Core of Expominer Virtual

XM180TE

Incomplete crystal of Brazilianite but with very well defined crystal forms, translucent, extraordinarily shiny and with an intense yellow color, with a small leafy aggregate of Muscovite.

Linópolis, Divino das Laranjeiras, Vale do Rio Doce, Minas Gerais Brazil

Specimen size: 6 x 4.2 x 2.2 cm

XM50TH

Inclusions and coatings of Rutile crystals, with good luster and an intense color, in a group of Quartz crystals.

Guariba farm, Presidente Kubitschek, Minas Gerais Brazil

Specimen size: 3.6 x 3.3 x 1.7 cm

XM230TD

Centered aggregates of acicular Hutchinsonite crystals, very lustrous and sharp, with vivid red reflections, on a granular Galena matrix partially covered by small Baryte crystals. Both the Hutchinsonite and Galena have been analyzed and we will send a copy of the analyses to the buyer.

Quiruvilca Mine (La Libertad Mine), Quiruvilca District, Santiago de Chuco Province, La Libertad Department Peru (04/2017)

Specimen size: 7.2 x 6 x 2.9 cm

Main crystal size: 0.6 x 0.1 cm

With analysis copy

XM180ED

Elongated mossy-dendritic growth of Gold microcrystals on a matrix coated with Calcite.

Municipio Vetas, Soto Province, Santander Department Colombia

Specimen size: 7.1 x 4.6 x 3 cm

XM80FG

Fluorite crystals with a cubic habit outlined by dodecahedron faces, transparent, very shiny and of a pale violet color with geometric color zoning, on matrix with Quartz crystals.
The specimen comes from the Jan Buma collection (number 040518) whose catalogue entry we will send to the buyer.

Laguna Brava, Tanti, Punilla Department, Córdoba Province Argentina (±2004)

Specimen size: 1 x 6.4 x 2.6 cm

Main crystal size: 0.8 x 0.7 cm

Former collection of Jan Buma

XM80PR

Group of Gratonite crystals, on matrix, with very well defined crystal forms and excellent terminations. An exquisite specimen from a practically extinct locality. A Spanish classic.

Atalaya cut, Rio Tinto Mines, Minas de Riotinto, Comarca Cuenca Minera, Huelva, Andalusia Spain

Specimen size: 1.8 x 1.1 x 1 cm

Main crystal size: 0.2 x 0.1 cm

XM50NP

An important find in the well-known old Atrevida mine, in the summer of 2015 a single geode with crusts of very well defined Mimetite crystals was uncovered. They are millimetric in size, very well defined and translucent with a greenish-yellow color and they show an elongated prism and an acute dipyramid. The Mimetite is more or less completely coating isolated or grouped cubic Galena crystals that are implanted on a matrix upholstered by aggregates of lenticular white Baryte crystals. Furthermore the sample have small laminar Wulfenite crystals that can be observed by close inspection. The Mimetite from this mine was already known, but not with such a well-defined and fine presentation, completely coating the Galena and absent on the Baryte.

Atrevida Mine, 'Amagada' pocket, Sur gallery, level 0, Vimbodí i Poblet, Comarca Conca de Barberà, Tarragona, Catalonia / Catalunya Spain (15/12/2015)

Specimen size: 3.5 x 3.5 x 2.5 cm

XM60EQ

Spheroidal aggregates of Pyrolusite, with columnar crystals with striated faces of considerable size and extraordinarily shiny surfaces, which contrast with the aggregates of Romanèchite, which have a more powdery appearance and a deep black color, on a limonite matrix. The specimen is of exceptional quality for both the locality and the species.

Haití Mine, Cabezo de San Ginés, San Ginés de la Jara, Cartagena, Comarca Campo de Cartagena, Region of Murcia (Murcia) Spain (10/2017)

Specimen size: 5.2 x 3.2 x 2.6 cm

Main crystal size: 0.3 x 0.2 cm

XM90EL

Spheroidal aggregates of Pyrolusite, with columnar crystals with striated faces of considerable size and extraordinarily shiny surfaces, which contrast with the aggregates of Romanèchite, which have a more powdery appearance and a deep black color, on a limonite matrix. The specimen is of exceptional quality for both the locality and the species.

Haití Mine, Cabezo de San Ginés, San Ginés de la Jara, Cartagena, Comarca Campo de Cartagena, Region of Murcia (Murcia) Spain (10/2017)

Specimen size: 5.9 x 4.1 x 2.6 cm

Main crystal size: 0.4 x 0.2 cm

XM45ND

Group of complex twinned Sphalerite crystals, on matrix, with curvatures on the faces and edges, translucent, lustrous, and with an excellent toasted honey color, partially covered by small white lamellar crystals of Baryte. The mine has been flooded for a long time and is currently completely inaccessible.

Troya Mine, Mutiloa, Comarca Goyerri, Guipúzcoa / Gipuzkoa, Basque Country (Euskadi) Spain (1991)

Specimen size: 4.3 x 3.4 x 2.1 cm

Main crystal size: 0.7 x 0.6 cm

XM80NE

Complex twinned crystals of Sphalerite, on matrix, with curvatures on the faces and edges, translucent, lustrous, and with an excellent honey color, partially covered by small rhombohedral crystals of Siderite and microcrystals of Pyrite. The mine has been flooded for a long time and is currently completely inaccessible.

Troya Mine, Mutiloa, Comarca Goyerri, Guipúzcoa / Gipuzkoa, Basque Country (Euskadi) Spain (1990)

Specimen size: 5.8 x 4.6 x 4.9 cm

Main crystal size: 0.5 x 0.4 cm

XM60NG

A novelty at MineralExpo Sants (Barcelona) 2017: Aggregate of Smithsonite pseudomorphs after scalenohedral Calcite crystals, with a color between brown and yellow, partially covered by small white Hemimorphite crystals. Both the Smithsonite and Hemimorphite have been analyzed and we will send a copy of the analyses to the buyer.

Herrerías area, Comarca Saja-Nansa, Cantabria Spain (2016)

Specimen size: 6 x 4.4 x 3.2 cm

Main crystal size: 2.1 x 1.4 cm

With analysis copy

XM90NF

A novelty at MineralExpo Sants (Barcelona) 2017: Aggregate of Smithsonite pseudomorphs after scalenohedral Calcite crystals, with a color between brown and yellow, partially covered by small white Hemimorphite crystals. Both the Smithsonite and Hemimorphite have been analyzed and we will send a copy of the analyses to the buyer.

Herrerías area, Comarca Saja-Nansa, Cantabria Spain (2016)

Specimen size: 6.8 x 6.4 x 3.1 cm

Main crystal size: 4.2 x 2 cm

With analysis copy

XM120NM

A novelty at MineralExpo Sants (Barcelona) 2017: Aggregate of Smithsonite pseudomorphs after scalenohedral Calcite crystals, with a color between brown and yellow, partially covered by small white Hemimorphite crystals. Both the Smithsonite and Hemimorphite have been analyzed and we will send a copy of the analyses to the buyer.

Herrerías area, Comarca Saja-Nansa, Cantabria Spain (2016)

Specimen size: 9.4 x 9 x 3.2 cm

Main crystal size: 4.2 x 2.4 cm

With analysis copy

XM65NH

Botryoidal and stalactitic Goethite growths with variegated metallic iridescence dominated by reddish, blue and green tones. The specimen comes from a one-off find in a mine currently located on land with no access, so it is unlikely that new specimens will be obtained.

La Lapilla Mine, La Lapilla, Alosno, Comarca El Andévalo, Huelva, Andalusia Spain (2009)

Specimen size: 6.5 x 5.4 x 2.7 cm

XM80NF

Botryoidal and stalactitic Goethite growths with variegated metallic iridescence dominated by reddish, blue and green tones. The specimen comes from a one-off find in a mine currently located on land with no access, so it is unlikely that new specimens will be obtained.

La Lapilla Mine, La Lapilla, Alosno, Comarca El Andévalo, Huelva, Andalusia Spain (03-04/2008)

Specimen size: 7.4 x 6.1 x 3.8 cm

XM100ZQ

Group of two complete and very sharp Pyrite crystals, shiny, very aesthetic and in perfect condition. Intact and without repair or treatment of any kind. A Spanish classic.

Ampliación a Victoria Mine, De Alcarama Range, Navajún, Comarca Cervera, La Rioja Spain

Specimen size: 6.1 x 4.2 x 4.2 cm

Main crystal size: 3 x 2.9 cm

XM60CX

Complete floater Gypsum crystal, very sharp, transparent, with bright luster, and inclusions. A classic of Spanish mineralogy, of large size for the deposit.

Montalbán, Comarca Cuencas Mineras, Teruel, Aragon Spain

Specimen size: 14.4 x 7.1 x 5.3 cm

XM60NF

Druse of very sharp octahedral Fluorite crystals, translucent and with a uniform green color and more intense than usual in this deposit, on matrix. A high quality Catalan classic.

Berta Quarry, Can Domènech Hill, Roques Blanques Mountains, Sant Cugat del Vallès-El Papiol, Comarca Vallès Occidental / Baix Llobregat, Barcelona, Catalonia / Catalunya Spain

Specimen size: 5.1 x 5 x 1.3 cm

Main crystal size: 0.8 x 0.7 cm

Very fluorescent long & short UV