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EAD66CD1: Quartz with Siderite and Dolomite

From a mine famous for the quality of its siderites and chalcopyrites, but which has a bad reputation for frequent small (or large) damage. This specimen on the other hand is totally perfect.
Kaiwu Mine, Hezhang, Bijie Prefecture, Guizhou Province China (2023)
Specimen size: 4.8 × 3.7 × 2.6 cm = 1.89” × 1.46” × 1.02”

HM80NG: Quartz with Siderite and Dolomite

Parallel growth of Quartz crystals on matrix, transparent, lustrous, very rich in inclusions and with lenticular Siderite and Dolomite crystals in which rhombohedral forms dominate.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (1997)
Specimen size: 6.8 × 5.7 × 3.7 cm = 2.68” × 2.24” × 1.46”

Main crystal size: 5.5 × 3.5 cm = 2.17” × 1.38”

AT12AN0: Quartz with Siderite and Gypsum

Quartz crystal, transparent and with inclusions, extraordinarily lustrous, on a matrix of rhombohedral Siderite crystals with small coatings of Gypsum. From a very little known locality.
Tazoult Nâra deposit, Jebel Boutaraf, Taouz, Er Rachidia Province, Drâa-Tafilalet Region Morocco (1999)
Specimen size: 6.4 × 3.3 × 4 cm = 2.52” × 1.30” × 1.57”

AM14AN0: Quartz with Siderite and Gypsum

Two Quartz crystals, one of them partially doubly terminated, transparent and with inclusions, extraordinarily lustrous, on a matrix of rhombohedral Siderite crystals with small coatings of Gypsum. From a very little known locality.
Tazoult Nâra deposit, Jebel Boutaraf, Taouz, Er Rachidia Province, Drâa-Tafilalet Region Morocco (1999)
Specimen size: 5.6 × 3.4 × 3.4 cm = 2.20” × 1.34” × 1.34”

Main crystal size: 3.4 × 1.4 cm = 1.34” × 0.55”

WZP50CD2: Quartz with Siderite and Muscovite

Group of hyaline Quartz crystals, all doubly terminated, with very defined faces, and some with polycrystalline terminations. They have a sharper and 'cleaner' appearance than the typical Panasqueira quartz, with coatings of Siderite and leafy aggregates of Muscovite. Like all specimens in Raúl Sanabria's collection, it was chosen with great care, always aiming to have something special that sets it apart.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal
Specimen size: 14.7 × 7.2 × 5.4 cm = 5.79” × 2.83” × 2.13”

NG96AB5: Quartz with Siderite and Muscovite

Parallel growth of completely clear, colorless and very bright Quartz crystals of great quality. They are partially coated by aggregates of lenticular Siderite crystals and leafy Muscovite aggregates.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (2004)
Specimen size: 11.4 × 6.1 × 4.8 cm = 4.49” × 2.40” × 1.89”

Main crystal size: 10.5 × 3 cm = 4.13” × 1.18”

NRA96AN5: Quartz with Siderite and Pyrite

Group of Quartz crystals, one of them clearly dominant, translucent and lustrous, with Siderite crystals and small Pyrite crystals. The specimen comes from the Miguel David Martínez collection (number 790), whose label we will send to the buyer.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (05/2008)
Specimen size: 8.7 × 5.9 × 5.3 cm = 3.43” × 2.32” × 2.09”

AA86Y6: Quartz with Siderite and Pyrite

Clear Quartz crystal with very clean and well defined faces and edges and partially coated by clusters of platy Siderite crystals, a very clear cream color and partially coated by Pyrite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (1987-2013)
Specimen size: 7.1 × 3.1 × 2.2 cm = 2.80” × 1.22” × 0.87”

NVV26AO0: Quartz with Siderite and Quartz (variety chalcedony)

Group of Quartz crystals on matrix, with a very short prism, translucent, with a very pale amethyst color, coated by a second generation of Quartz (chalcedony variety) and with small spheroidal growths of Siderite. The specimen comes from the Miguel David Martínez collection (nº 768), whose label we will send to the buyer. It was previously in the collection of Mariano Guillén.
San Valentín open pit, Sancti Espíritu, Sierra Minera de Cartagena-La Unión, La Unión, Comarca Campo de Cartagena, Region of Murcia (Murcia) Spain
Specimen size: 6.4 × 5 × 4.4 cm = 2.52” × 1.97” × 1.73”

NH57AD6: Quartz with Siderite, Pyrite, Ferberite and Fluorapatite

Floater aggregate of two Quartz crystals with the most typical forms on the front side and polycrystalline growths on the back. They are partially coated by Siderite, Pyrite and Fluorapatite and have some small inclusions of very well defined Arsenopyrite.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (1999)
Specimen size: 22 × 11 × 5.5 cm = 8.66” × 4.33” × 2.17”

Main crystal size: 17.8 × 5.5 cm = 7.01” × 2.17”

EE9K9: Quartz with smoky Quartz

In this specimen two clearly different crystal growth phases coexist. In the first one the Quartz crystal has a very deep smoky color, and covering this primary crystal is a second growth phase of milky Quartz.
Mas Sever Quarry, Massabè (Mas Ceber), Sils, Comarca La Selva, Gerona / Girona, Catalonia / Catalunya Spain (2005)
Specimen size: 8 × 4.6 × 2.9 cm = 3.15” × 1.81” × 1.14”

T26XH5: Quartz with Sphalerite

A group of prismatic crystals with very pronounced phantoms. Terminations clearly show only three faces of one rhombohedron and not the usual six of two rhombohedra. The group is formed on a matrix of Sphalerite.
With the sample we’ll give two very old and historical labels. The first one, from the XIX century and the second one from J.M. Ackner collection.
Baia de Aries (Offenbánya), Apuseni mountains, Alba County, Transylvania Romania (±1870)
Specimen size: 9 × 5.4 × 3.4 cm = 3.54” × 2.13” × 1.34”

Main crystal size: 1.2 × 0.5 cm = 0.47” × 0.20”

EJ38D5: Quartz with Sphalerite

Well, I feel that the photo says everything. Maybe I should just add that the matrix is not Quartz but Sphalerite with some well formed crystals. As is well known, the small white areas on the red crystals are a second generation of white Quartz.
Second Sovetskii Mine, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai Russia (2001)
Specimen size: 6.5 × 6.5 × 6.4 cm = 2.56” × 2.56” × 2.52”

TM47AF7: Quartz with Sphalerite and Chalcopyrite

Aggregates of Chalcopyrite crystals with tetrahedral morphology and superficially substituted and recrystallized by Sphalerite. The Chalcopyrite-Sphalerite aggregates are implanted on a transparent Quartz crystal.
Qagan Obo deposit (Rongguan), Diyanqinamu mining district, East Ujimqin Banner (Dongwu Qi), Xilin Gol League (Xilinguole Prefecture), Inner Mongolia Autonomous Region China (05/2016)
Specimen size: 15.3 × 3.7 × 3.2 cm = 6.02” × 1.46” × 1.26”

Main crystal size: 1.8 × 1.7 cm = 0.71” × 0.67”

TR97AF7: Quartz with Sphalerite and Chalcopyrite

Chalcopyrite crystals with tetrahedral morphology superficially substituted for and recrystallized by Sphalerite. The Chalcopyrite-Sphalerite crystals are implanted on a transparent Quartz crystal.
This sample has been referenced and figured as a novelty in Ste. Marie 2017, in the magazine "Le Règne Minéral" (Num. 136. 2017; page 43)
Qagan Obo deposit (Rongguan), Diyanqinamu mining district, East Ujimqin Banner (Dongwu Qi), Xilin Gol League (Xilinguole Prefecture), Inner Mongolia Autonomous Region China (05/2016)
Specimen size: 20.3 × 7.7 × 4.3 cm = 7.99” × 3.03” × 1.69”

TK48AF7: Quartz with Sphalerite and Chalcopyrite

Chalcopyrite crystals with tetrahedral morphology superficially substituted for and recrystallized by Sphalerite. The Chalcopyrite-Sphalerite crystals are implanted on a transparent Quartz crystal.
Qagan Obo deposit (Rongguan), Diyanqinamu mining district, East Ujimqin Banner (Dongwu Qi), Xilin Gol League (Xilinguole Prefecture), Inner Mongolia Autonomous Region China (05/2016)
Specimen size: 20.3 × 3.2 × 3.4 cm = 7.99” × 1.26” × 1.34”

Main crystal size: 1.7 × 1.5 cm = 0.67” × 0.59”

TX69AF7: Quartz with Sphalerite and Chalcopyrite

Chalcopyrite crystals with tetrahedral morphology superficially substituted for and recrystallized by Sphalerite. The Chalcopyrite-Sphalerite crystals are implanted on a transparent Quartz crystal.
Qagan Obo deposit (Rongguan), Diyanqinamu mining district, East Ujimqin Banner (Dongwu Qi), Xilin Gol League (Xilinguole Prefecture), Inner Mongolia Autonomous Region China (05/2016)
Specimen size: 19.8 × 5 × 4.1 cm = 7.80” × 1.97” × 1.61”

RM64R0: Quartz with Titanite and Chlorite

Very sharp thin laminar light cream-colored crystals of Titanite on a group of deeply chloritized Quartz crystals partially coated by small Orthoclase (adularia) crystals. The locality is considered an European classic.
Bächli glacier, Bächli Valley, Grimsel, Bern Switzerland (±1947)
Specimen size: 8.8 × 5 × 2.4 cm = 3.46” × 1.97” × 0.94”

Main crystal size: 1 × 0.5 cm = 0.39” × 0.20”

EF87AM4: Quartz with Wulfenite

Group of Wulfenite crystals, two of them large and clearly dominant, covered almost entirely by white microcrystalline Quartz. From one of the great classical deposits for Wulfenite.
M'Fouati, M'Fouati District, Bouenza Department Republic of the Congo
Specimen size: 5.6 × 4.9 × 4.3 cm = 2.20” × 1.93” × 1.69”

22TAL26: Quartz, Chlorite

Doubly terminated and slightly flattened Quartz crystal, with well defined faces and edges, between transparent and translucent, completely covered by Chlorite microcrystals on the upper termination. The specimen, an Italian alpine classic, comes from the old collection of Robert-Auguste Touchon.
Monte Bianco Massif (Mont Blanc Massif) Italy
Specimen size: 6.0 × 4.5 × 2.5 cm = 2.36” × 1.77” × 0.98”

AC100Y8: Quartz, Ferberite, Fluorapatite, Muscovita, Sphalerite, Siderite, Arsenopyrite and Pyrite

Very transparent and bright Quartz crystals, some of them coated by a second generation of Quartz microcrystals, with very rich included areas and with a bright Ferberite crystal, leafy Muscovite and small Sphalerite, Arsenopyrite, Pyrite, Siderite and clear green Fluorapatite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (1987-2013)
Specimen size: 7.7 × 7.3 × 2.6 cm = 3.03” × 2.87” × 1.02”

10DF12: Quartz, Muscovite, Albite

Doubly terminated Quartz crystal, water-clear, with perfectly defined faces and edges, with internal dissolution forms, lustrous and very translucent, associated with hexagonal Muscovite crystals and white Albite crystals. It comes from one of Brazil's largest mining areas, the state of Minas Gerais, which has a surface area similar to that of France
Minas Gerais Brazil
Specimen size: 7.3 × 3 × 2.3 cm = 2.87” × 1.18” × 0.91”

Main crystal size: 7.3 × 2.1 cm = 2.87” × 0.83”

18TFL12: Quartz, Pyrite

Group of Quartz crystals, one of them clearly dominant and upright in the center of the piece, with marked growth striations on the prism, terminated and partially covered by rosettes of cubic Pyrite crystals. The Trepča mining complex, from where this specimen comes, is one of the largest polymetallic deposits in the world, from the former collection of Ferat Voca.
Stan Trg (Stan Terg, Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District Kosovo (2000-2021)
Specimen size: 7.3 × 4.8 × 4.0 cm = 2.87” × 1.89” × 1.57”

16NRZ46: Quartz, Pyrite

Aggregate formed by a multitude of cubic Pyrite crystals of golden color and good luster, with well defined faces and edges accompanied by aerial growths of transparent Quartz crystals, with the prisms being well developed and with complete terminations, exhibiting a beautiful contrast in color with the Pyrite. Coming from a mining area located about 4700 meters (over 15,000 feet!) above sea level. This piece comes from the Miguel David Martínez collection (number 795) whose label we will send to the buyer.
Mundo Nuevo mining area, Mundo Nuevo, Huamachuco, Sánchez Carrión Province, La Libertad Department Peru (2010)
Specimen size: 17.0 × 8.5 × 5.7 cm = 6.69” × 3.35” × 2.24”

Main crystal size: 0.6 × 0.6 cm = 0.24” × 0.24”

16TRF26: Quartz, Siderite

On a matrix formed of deep brown Siderite crystals there are Quartz crystals, very aerial and transparent, with well-defined faces and edges. The piece comes from the Alain Martaud collection, the label of which will be given to the buyer and which states that the specimen had previously been in the Jacques Dayssiols collection.
Le Trou des Chasseurs, Vizille, Grenoble, Isère, Auvergne-Rhône-Alpes France (2005)
Specimen size: 6.0 × 4.5 × 3.2 cm = 2.36” × 1.77” × 1.26”

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