The Core of Expominer Show Virtual 2022

XM2640TBT

Elegant specimen composed of a matrix of tabular Calcite crystals on which are arranged thick, very aerial and arborescent Silver crystals, curved and with twisted terminations.
Comes from a gold deposit in Shandong Province in China.

Jizishan deposit, Linqu, Weifang Prefecture, Shandong Province China (±2014)

Specimen size: 5 x 2.1 x 1.8 cm

Main crystal size: 3.2 x 0.3 cm

Calcite fluorescent long & short UV

XM2220TPF

On a spherical aggregate of Calcite crystals there is a swarm of Silver filaments, some of them more developed and more isolated, enveloping the Calcite core.
Comes from a gold deposit in Shandong Province in China.

Jizishan deposit, Linqu, Weifang Prefecture, Shandong Province China (±2014)

Specimen size: 2.4 x 2 x 2 cm

Main crystal size: 1.8 x 0.1 cm

XM275ELJ

Cubic Fluorite crystals with faces and edges well defined, on a matrix of crystalline Quartz dotted with small Calcite crystals, from a mine that exploits tungsten and tin hosted in Quartz veins.

Piaotang Mine, Dayu, Ganzhou Prefecture, Jiangxi Province China (03/2022)

Specimen size: 5.6 x 4.4 x 3.7 cm

Main crystal size: 1 x 0.9 cm

XM2440EXL

Aggregate of lamellar Roweite crystals, on matrix and of good size for the species. Intergrown with each other and of a much deeper and more vivid orange hue than the specimens usually found at the locality. One of the more interesting borates from a mine that is exploited for lead and zinc.

Shijiangshan Mine, Shijiangshan village, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region China (04/2017)

Specimen size: 5.8 x 3.6 x 3.6 cm

Main crystal size: 1 x 0.7 cm

XM2340MAB

Crystals of Calcite (cobalt-rich variety) as growths between coralloidal and arborescent, on a rock matrix, with a gradation of color, partially covering a first generation of lamellar Calcite crystals.

Lanping, Nujiang Autonomous Prefecture, Yunnan Province China (07/2022)

Specimen size: 5.1 x 2.1 x 2.7 cm

XM2230MAX

Druse of Calcite crystals (cobalt-rich variety) with mauve-pink tones, in a rock matrix, on a first generation of Calcite crystals which were not stained by cobalt ions.

Lanping, Nujiang Autonomous Prefecture, Yunnan Province China (07/2022)

Specimen size: 4.4 x 3.6 x 2.9 cm

XM2230MFR

Druse of Calcite crystals (cobalt-rich variety) showing scalenohedral habits in some deeper toned crystals and globular forms of lighter color in others. Accompanied by fine acicular radiating crystals.

Lanping, Nujiang Autonomous Prefecture, Yunnan Province China (07/2022)

Specimen size: 3.7 x 2.6 x 1.6 cm

XM2230MLM

Group of Cerussite crystals, one of them clearly dominant, twinned, very sharp and lustrous, between transparent and translucent, with external staining and iron oxide inclusions.
It comes from a Congolese mining district which produces lead, zinc and, to a lesser extent, copper.

M'Fouati, M'Fouati District, Bouenza Department Republic of the Congo (2022)

Specimen size: 6.7 x 2.8 x 2.2 cm

XM2290MEE

V-shaped twin of sharp and lustrous Cerussite crystals, with polycrystalline terminations and remnants of a matrix formed of iron oxides. It comes from a Congolese mining district which produces lead, zinc and, to a lesser extent, copper.

M'Fouati, M'Fouati District, Bouenza Department Republic of the Congo (2022)

Specimen size: 5.6 x 3.9 x 2.8 cm

Main crystal size: 5.1 x 2.7 cm

XM2390TBM

Group of lustrous and complex twinned crystals of Sphalerite, very deep honey colored, almost dark, sprinkled randomly with Dolomite crystals that give it a very marked color contrast.
A classic of Cantabrian mining from Las Mánforas, in a spectacular location next to Picos de Europa National Park.

Áliva Mine (Las Mánforas Mine), Áliva mining area, Camaleño, Comarca Liébana, Cantabria Spain

Specimen size: 7 x 6.9 x 5.2 cm

Main crystal size: 2.4 x 2.4 cm

XM2220NPX

Single crystal of Sphalerite, translucent and with a very uniform honey color, showing smooth tetrahedron faces, very lustrous, with polycrystalline growths and dotted with white Dolomite crystals that give a nice color contrast.
A classic of Cantabrian mining from Las Mánforas, in a spectacular location next to the Picos de Europa National Park.

Áliva Mine (Las Mánforas Mine), Áliva mining area, Camaleño, Comarca Liébana, Cantabria Spain

Specimen size: 6 x 5 x 2.6 cm

XM2190NTX

Floater group of Sphalerite crystals, translucent and of a very uniform honey color, with smooth faces corresponding to the tetrahedron and partially coated by a multitude of very sharp and outlined Dolomite crystals, creating a beautiful color contrast.
A classic of Cantabrian mining from Las Mánforas, located at a spectacular site next to Picos de Europa National Park.

Áliva Mine (Las Mánforas Mine), Áliva mining area, Camaleño, Comarca Liébana, Cantabria Spain

Specimen size: 5.3 x 4 x 2.6 cm

Main crystal size: 4.3 x 2.7 cm

XM2160NNB

Floater group of Sphalerite crystals, translucent and of a very deep and uniform honey color, with faces that show polycrystalline growths, partially covered by a multitude of very sharp and profiled Dolomite crystals that give a nice color contrast.
A classic of Cantabrian mining from Las Mánforas, at a spectacular location next to the Picos de Europa National Park.

Áliva Mine (Las Mánforas Mine), Áliva mining area, Camaleño, Comarca Liébana, Cantabria Spain

Specimen size: 4.2 x 3.3 x 2.9 cm

Main crystal size: 3.1 x 2.7 cm

XM2130NJB

Floater group of Sphalerite crystals, translucent and of a very uniform honey color, with smooth faces corresponding to the tetrahedron and partially coated by a multitude of very sharp and outlined Dolomite crystals, creating a beautiful color contrast.
A classic of Cantabrian mining from Las Mánforas, located at a spectacular site next to Picos de Europa National Park.

Áliva Mine (Las Mánforas Mine), Áliva mining area, Camaleño, Comarca Liébana, Cantabria Spain

Specimen size: 4 x 2.9 x 2.3 cm

Main crystal size: 2.2 x 2.1 cm

XM2120NLX

Complex crystal of Sphalerite, translucent, with a very uniform honey color, showing parallel growths with visible smooth tetrahedron faces and small Dolomite crystals.
A classic of Cantabrian mining from Las Mánforas, located at a spectacular site next to Picos de Europa National Park.

Áliva Mine (Las Mánforas Mine), Áliva mining area, Camaleño, Comarca Liébana, Cantabria Spain

Specimen size: 2.6 x 2.3 x 1.7 cm

XM2110NNX

Complex crystal of Sphalerite, translucent, with a very uniform honey color, showing parallel growths with visible smooth tetrahedron faces and small Dolomite crystals.
A classic of Cantabrian mining from Las Mánforas, located at a spectacular site next to Picos de Europa National Park.

Áliva Mine (Las Mánforas Mine), Áliva mining area, Camaleño, Comarca Liébana, Cantabria Spain

Specimen size: 2.7 x 2 x 1.9 cm

XM290NMB

A sulphide and carbonate festival! Group of Galena crystals that have been practically completely covered by a multitude of small pyrite crystals. There was subsequent precipitation of very sharp and profiled Dolomite crystals, some of them with sheaf-like curvatures, and finally small cream-toned crystals of Calcite complete the piece.

La Florida mining area, Herrería-Valdáliga-Rionansa, Comarca Costa Occidental/Saja-Nansa, Cantabria Spain

Specimen size: 11.4 x 8.6 x 4.1 cm

XM290NXE

Groups of Pyromorphite crystals with a short prismatic habit, some of them isolated, with faces and sharp edges, of a very deep and uniform grass-green color, standing out on a rock matrix covered by a mixture of brownish iron oxides.
From a locality from which it is not easy to get pecimens.

Monte Bedures, Meredo, Vegadeo, Comarca Eo-Navia, Principality of Asturias (Asturias) Spain (2008)

Specimen size: 3.2 x 2.4 x 1.8 cm

Main crystal size: 0.1 x 0.1 cm

Minor fluorescence long & short UV

XM2180TAH

Group of scalenohedral Calcite crystals, one of them clearly dominant, doubly terminated and with complete polycrystalline terminations. This crystal is translucent, but transparent towards the ends, cream-white in color and implanted on a matrix of rock partially covered by yellowish Fluorite crystals and small white Dolomite crystals. On the back of the piece the matrix is almost totally covered by tiny greyish crystals of Pyrite.
The specimen comes from the collection of Miguel David Martínez Pérez (number 835) whose label we will send to the buyer.

Moscona Mine, El Llano, Solís, Corvera de Asturias, Comarca Avilés, Principality of Asturias (Asturias) Spain (±2014)

Specimen size: 9.4 x 7.7 x 5.1 cm

Main crystal size: 6.2 x 4.7 cm

Former collection of Miguel David Martínez