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RM2257   Rhodochrosite with quartz

Animas Mining District, Silverton, San Juan Co., Colorado, United States

Excellent specimen of rhodochrosite from this classic American locality from where not many specimens are available, unless they appear in former collections. This piece entered the Joan Astor collection in 1976 and was acquired from Joan Montal, a well-known old dealer from Vilafranca del Penedés (Barcelona). Several rhombohedral rhodo crystals, very well defined, with a very aesthetic pink color. With a globular aggregate of a second generation of rhodo. It stands out on the matrix of quartz crystals. A unique piece.


Size: 5 x 4 x 3 cm.
Found in 1970's.

Col. Joan Astor.


 

RM2221   Alurgite, Variety of Muscovite-2M1

Prabornaz mine, Saint-Marcel, Valle d'Aosta, Italy

Alurgite is a variety of purple muscovite. It was classified 1959 as an intermediate variety between leucophyllite and muscovite. A study of Knurr and Bailey (1986, online) showed that the alurgite, treated as muscovite-2M1 with Mn, contains trivalent manganese (in contrast to divalent Mn-containing "manganophyllite"). This specimen of good size shows us an aggregate of micaceous crystals, with an intense brilliance and good color, in a quartzite rocky matrix. A rare variety of muscovite.


Size: 10 x 8.5 x 6 cm.

 

RM2242   Roweite and Olshanskyite

Shijiangshan mine, Linxi, Linxi Co., Ulanhad League, Inner Mongolia, China

Rich aggregates of laminar and tabular roweite crystals, with an exceptional quality for the species. The crystals of this rare calcium and manganese borate show very well defined forms, with a light brown color and excellent definition. The quality of these specimens is far superior to that previously known for the species. Along with them, and giving a very aesthetic touch, a group of olshanskyite crystals, a calcium borate, of a snowy white and with parallel growths. There is no doubt that this specimen is very worthy in any mineral collection and display.


Size: 5.5 x 4.5 x 4 cm.

Price: 300 €Buy
 

RM2259   Fluorite

San Antonio mine, Santa Eulalia, Municipio de Aquiles Serdán, Chihuahua, Mexico

Very aesthetic specimen of fluorite. It shows the cubic shape, with polysynthetic growths on faces. The color very uniform, a delicate violet tone, with geometric zoning on edges, more intense. Excellent brilliance, transparence and very well defined faces and edges. An exceptional piece from Santa Eulalia and the Joan Astor collection, acquired by this great Catalan photographer and collector at the EXPOMINER Barcelona mineral show in 1981.


Size: 5.2 x 3.5 x 3.5 cm.
Main crystal: 2.4 cm.
Found in 1980's.

Col. Joan Astor,


 

RM2227   Covellite

Corta Atalaya, Minas de Riotinto, Huelva, Andalucía, Spain

On a matrix of sulphides, an iridescent patina of covellite, very brilliant, with deep blue color. From a classic locality for the Spanish mineralogy. This specimen belongs from the Arguijo collection. A rarity.


Size: 5.6 x 4.5 x 2.8 cm.
Found in 1980's.

Col. A. Arguijo (L'Hospitalet de Llobregat, Barcelona).
Classic locality
 

RM2263   Covellite and sulphur

Corta Atalaya, Minas de Riotinto, Huelva, Andalucía, Spain

his good sized specimen from the late 80s belongs from the Arguijo collection, and it was mined in this famous "onubense" mine. It is a sulphide matrix partially covered by brilliant covellite microcrystals, very defined and visible. It has an intense metallic blue iridescence and this very characteristic color. It is accompanied by numerous crystals of native sulphur with curved faces, brilliance, translucent and showing a delicate yellow tone. It was mined from a sporadic finding in the Corta Atalaya, Minas de Riotinto. A unique occasion to obtain one of these "old" specimens.


Size: 7.4 x 5.7 x 5.2 cm.
Found in 1980's.

Col. A. Arguijo (L'Hospitalet de Llobregat, Barcelona).
Classic locality
 

RM2235   Twinned cerussite and Baryte

Mine des O, Mibladen, Midelt, Drâa-Tafilalet, Morocco

Good sized cerussite crystal, with cyclic twinning, complete, and polysynthetic growths. Good color and defined faces, disposed very aerially on a matrix with baryte crystals. A very aesthetic Moroccan classic. With handwritten label.


Size: 9.2 x 4.2 x 3.5 cm.
Main crystal: 3.2 cm.
Found in 1980's.

Col. L. Daunis (Barcelona).
Fluorescent under long wave UV


 

RM2234   Hyaline faden quartz

Iouriren Mine, Tafraout, Tiznit, Souss-Massa, Morocco

Group of quartz crystals, with defined rhombohedron forms and parallel growth (faden). Excellent brilliance and transparence. These are specimens from a Moroccan mine that is poorly represented in collections.


Size: 5.6 x 4.8 x 1.7 cm.
Found in 2019.

 

RM2233   Hyaline Quartz

Iouriren Mine, Tafraout, Tiznit, Souss-Massa, Morocco

Group of quartz crystals, with defined rhombohedron forms and some with more development faces, poorly developed prisms. Excellent brilliance and transparence. These are specimens from a Moroccan mine that is poorly represented in collections.


Size: 7.5 x 4.5 x 3 cm.
Found in 2019.

Price: 65 €Buy
 

RM2246   Orthoclase, double twinned

La Machota Baja, Zarzalejo, Madrid, Spain

A very aesthetic miniature. Orthoclase specimen that shows two crystals with the Karlsbad twin. An unusual piece for this classic Spanish locality. From the Joan Astor collection (Barcelona), former Joan Abella collection (Sabadell).


Size: 3 x 2 x 2 cm.
Found in 1990's.

Col. Joan Astor, Col. Joan Abella.
Classic locality


 

RM2254   Actinolite

Can Serrat-La Mena mines, Sant Feliu de Buixalleu, Girona, Catalunya, Spain

These rare specimens of actinolite correspond to those cited by L. Thomas (Els Minerals de Catalunya, year 1920) and E. Bareche (Els Minerals de Catalunya, Segle XX, year 2005: "Where it really appears in large quantities is inside the well they made near the creek in the mines of Can Serrat, road from Hostalric to Arbúcies, in the district of Sant Feliu de Buixalleu. It is shiny, greenish in color; we collected and kept specimens that were examined by Don Ramón Adan de Yarza, which confirmed our identification". It is a skarn formed by the contact of the granodiorites and the limestone of the Paleozoic. From the former Arguijo collection.


Size: 7 x 6 x 5 cm.
Found in 1970's.

Col. A. Arguijo (L'Hospitalet de Llobregat, Barcelona)


 

RM2272   Sphalerite and dolomite

Touissit, Touissit-Bou Beker, Jerada, Oriental Region, Morocco

Some unusual specimens from the Oujda area, specifically from Touissit. These are aggregates of sphalerite crystals, of an intense brown color, with reddish transparencies, good luster, which are dotted with small chalcopyrite/pyrite crystals, disposed on a dolomite matrix, with an aesthetic contrast. Just arrived (March 2020) after our trip through Moroccan lands.


Size: 7 x 4.4 x 3 cm.
Main crystal: 1 cm.
Found in 02/2020

 

RM2271   Sphalerite, chalcopyrite and dolomite

Touissit, Touissit-Bou Beker, Jerada, Oriental Region, Morocco

Some unusual specimens from the Oujda area, specifically from Touissit. These are aggregates of sphalerite crystals, some of them twinned, of an intense brown color, with reddish transparencies, good luster, which are dotted with small chalcopyrite and pyrite crystals, disposed on a dolomite matrix, with an aesthetic contrast. Just arrived (March 2020) after our trip through Moroccan lands.


Size: 5.6 x 5.5 x 3.2 cm.
Main crystal: 1.1 cm.
Found in 02/2020

 

RM2270   Sphalerite, chalcopyrite and dolomite

Touissit, Touissit-Bou Beker, Jerada, Oriental Region, Morocco

Some unusual specimens from the Oujda area, specifically from Touissit. These are aggregates of sphalerite crystals, of an intense brown color, with reddish transparencies, good luster, which are dotted with small chalcopyrite and pyrite crystals, disposed on a dolomite matrix, with an aesthetic contrast. Just arrived (March 2020) after our trip through Moroccan lands.


Size: 5.5 x 5.4 x 3 cm.
Main crystal: 1.2 cm.
Found in 02/2020

Price: 50 €Buy
 

RM2269   Sphalerite, chalcopyrite and dolomite

Touissit, Touissit-Bou Beker, Jerada, Oriental Region, Morocco

Some unusual specimens from the Oujda area, specifically from Touissit. These are aggregates of sphalerite crystals, of an intense brown color, with reddish transparencies, good luster, which are dotted with small chalcopyrite and pyrite crystals, disposed on a dolomite matrix, with an aesthetic contrast. Just arrived (March 2020) after our trip through Moroccan lands.


Size: 6.2 x 5 x 4.8 cm.
Main crystal: 2.5 cm.
Found in 02/2020

 

RM2217   Arsenic "scherbenkobalt"

Kippenhain Mine, Schreckenberg, Frohnau, Annaberg-Buchholz, Germany

Old specimen of native arsenic, forming botryoidal aggregates, with an intense gray color slightly bronze. These specimens were known locally as "scherbenkobalt" (pieces of cobalt). Note that this mine is the Type Locality of the annabergite. A difficult German mineral classic to find from this locality, an old silver and cobalt mine, worked from around 1650 until 1852 and reworked between 1856 and 1859.


Size: 4.5 x 4 x 2.8 cm.

 

RM2216   Rhodochrosite

Uchucchacua mina, Oyón, Lima, Peru

Group of rhodochrosite crystals with a uniform pink color, with well-defined rhombohedron echeloned and scalenohedron forms. Good gemmy transparence. They are accompanied by other smaller rhodo crystals. On a solid matrix with quartz crystals with inclusions and manganese oxides.


Size: 6.5 x 3.5 x 3.4 cm.
Main crystal: 6 mm.

Price: 55 €Buy
 

RM2215   Rhodochrosite

Uchucchacua mina, Oyón, Lima, Peru

Group of rhodochrosite crystals with a uniform pink color, with well-defined rhombohedron echeloned and scalenohedron forms. Good gemmy transparence. They are accompanied by other smaller rhodo crystals. On a solid matrix with quartz crystals with inclusions and manganese oxides.


Size: 4.8 x 3.2 x 3.2 cm.
Main crystal: 5 mm.

Price: 45 €Reserved

 

RM2214   Coronadite

Bou Tazoult, Imini, Ouarzazate, Drâa-Tafilalet, Morocco

Botryoidal aggregates of coronadite, with greasy luster and color between deep dark gray to almost black. It is a very old specimen from this Moroccan locality. Not easy to find samples from this mine in the market. With the Montal typed label.


Size: 7.5 x 7.2 x 6 cm.
Found in 1997.

Col. M. Marí & A. García, #0.095


Price: 55 €Buy
 

RM2213   Hidalgoite

La Estrella mine, Pardos, Guadalajara, Castilla-La Mancha, Spain

Hidalgoite specimen from this classic Spanish mine. It appears as olive-green coatings, forming aggregates of tiny crystals. Collected in 1999 by M. Marí and A. García. The Estrella mine is located in the Majadillas hill, in the extreme south of the municipality of Pardos, in Guadalajara. It is an old copper and silver mine whose exploitation dates back to the 17th century, with its maximum activity being in the mid-19th century coinciding with the splendor of the nearby Hiendelaencina mines.


Size: 6.7 x 3.8 x 2 cm.
Found in 1999.

Col. M. Marí & A. García, #0.131
Classic locality


 

RM2212   Bolivarite

Dédestapolcsány, Upponyi Mts, Borsod-Abaúj-Zemplén, Hungary

Bolivarite is a very rare aluminium phosphate, related to evansite. In this specimen white bolivarite is filling vugs of a limonite matrix. This mineral was found as crusts and as a filling of cracks in some granitic rocks a few km from Pontevedra (Spain), on the road to Campo Lameiro. Its discoverers, Fernandez Navarro and Castro Barea, named it as a tribute to the eminent Spanish entomologist, exiled in Mexico after the Spanish Civil War, Ignacio Bolivar y Urrutia.


Size: 3.3 x 2.2 x 2.1 cm.

Price: 45 €Reserved

 

RM2211   Pyromorphite

Plynlimon Mine, Ponterwyd, Cwmrheidol, Ceredigion, Wales, United Kingdom

Rich group of prismatic pyromorphite crystals, of an intense green color and forming radial aggregates. This specimen comes from this not well-known mine, one of the most remote in central Wales. The first works date from 1854, and continued to be exploited intermittently until 1896. Total registered production is 3271 tons of lead ore. Sphalerite and marcasite are relatively common species, while pyromorphite is rare. The specimen comes from the former Joan Astor collection and was purchased from Montal in 1977. With old labels.


Size: 5 x 4 x 2.8 cm.
Main crystal: 5 mm.
Found in 1970's.

Col. Joan Astor.


 

RM2210   Baryte

Muscadroxius-Genna Tres Montis Mine, Silius, Sarrabus-Gerrei, Sardegna, Italy

Group of prismatic baryte crystals, doubly terminated and well defined, with good luster and transparency. They are disposed very aerially on the matrix. The history of the Silius mines begins in the first decades of the 20th century, particularly in 1916, when the first research permits were registered for the galena. It was in the early 1950s that the focus was on major fluorite outcrops and in 1953 the first company to obtain the mining concession for the exploitation of the rich fluors of fluorite and galena was created, the Mineraria Silius SpA, active until 2006.


Size: 6.5 x 5.5 x 4.5 cm.
Main crystal: 20 mm.

 

RM2195   Hollandite

Taouz mine, Tadaout, Taouz, Er Rachidia, Meknès-Tafilalet, Morocco

Very aesthetic and good sized specimen of hollandite, with stalactitic botryoidal structures, velvety and intense almost black gray. A quality piece from this classic Moroccan mine.


Size: 10 x 6 x 5.5 cm.
Found in 2019.

Price: 130 €Buy
 

RM2200   Fluorite

Mandronarivo area, Mandronarivo, Beroroha, Atsimo Andrefana, Toliara, Madagascar

Group of cubic fluorite crystals, between translucent and transparent, with a deep green color with delicate dichroism under sunlight. The crystals are interpenetrated and showing geometric color and inclusions zoning. Very fluorescent under LW-UV and SW-UV. New locality/area for fluorite from Madagascar.


Size: 10 x 4.6 x 3.4 cm.
Main crystal: 2.3 cm.
Found in 2018.

Fluorescent under LW-UV and SW-UV lights
Price: 80 €Buy
 
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