Rosell Minerales
RM2565 "Fir" Wood Opal
Warden, Grant Co., Washington, United StatesThe fossil woods of the US state of Washington have been well known since the 19th century. This specimen is a wood opal from this area and clearly shows the growth rings of the tree in question. If it is a fir tree or another member of the pine trees, it is already a subject on which we cannot pronounce ourselves.
As we can read in a brochure from the 80s (visit link): "Petrified wood is found throughout the state and is symbolic of our early forests. It represents a period of geological time when extensive volcanism buried great forests with volcanic ash and basaltic lava".
Size: 7.5 x 5 x 1.7 cm.
Found in ±1975.
Col. J. Astor, Barcelona.

RM2543 Amazonite, Microcline variety
Pikes Peak, Teller Co., Colorado, United StatesGroup of prismatic crystals of amazonite, a variety of microcline. With defined faces of prisms and pinacoids. It has this characteristic bluish-green color. Pikes Peak is the "mecca" of the amazonites, one of several mountains formed by the erosion of the Pikes Peak batholith, famous for its myarolytic cavities with smoky quartz, amazonite, topaz, among others. It belongs to the collection of Joan Astor, with a handwritten label and another typewritten.
Size: 5.4 x 4.8 x 3.5 cm.
Main crystal: 3.6 cm.
Found in ±1976.
Col. J. Astor, Barcelona.

RM2510 Linarite
Grand Reef Mine, Laurel Canyon, Klondyke, Graham Co., Arizona, United StatesRich group of linarite crystals, very bright, with well visible facets and a spectacular color. They upholster a cavity in the quartz matrix. From this classic locality for the species.
Size: 6 x 4.3 x 3.5 cm.
Found in 1992
Classic locality
RM2516 Benitoite
California State Gem Mine, New Idria Mining District, Santa Rita Peak, San Benito Co., California, United StatesVery good size crystal of benitoite, a rare barium and titanium silicate, rich in faces, highlighting those of the trigonal dypraramid, together with those of the hexagonal dypyramid and the pinacoidal faces. Intense color and translucent. It has a small dent in one edge, common in these specimens without affecting the aesthetics of the specimen. On matrix.
Size: 5 x 4.1 x 3.6 cm.
Main crystal: 1.6 cm.
Found in ca. 2003.
Col. Marí-García (Castelló) #0.520
Type Locality
RM2515 Artinite and serpentine
Staten Island (Richmond Co.), New York City, New York, United StatesA rare specimen collected in an urban setting. Colorless to white radial aggregates of acicular artinite crystals on a serpentine matrix. Aesthetic, good size, excellent quality, very rich, from the classic Staten Island locality. Artinite is a rare hydrated magnesium carbonate. This piece comes from the J. Astor collection, acquired in 1980 from Bailey Minerals (Ángel Jesús Talabán García, Segovia 1942-Madrid 2007). With old labels. An USA classic nowadays not easy to find.
Size: 6.6 x 3.6 x 3.4 cm.
Main crystal: 1.5 cm. aggr.
Found in ca. 1980.
Col. Joan Astor (Barcelona).
Classic locality

RM2513 Calcite, galena, sphalerite and dolomite
Sweetwater Mine, F-5 Area, Ellington, Reynolds Co., Missouri, United StatesCalcite gemmy crystal from this classic North American locality, very transparent, bright and with a delicate yellow color. It is disposed very aerially on a matrix with galena, sphalerite, dolomite and pyrite. It is also crystallographically very interesting because of the shapes of the elongated rhombohedron, with the faces of the scalenohedron. Acquired by J. Astor from J. Montal in the mid-1970s, with labels.
Size: 3.8 x 3.5 x 2.4 cm.
Main crystal: 2.1 cm.
Found in ca. 1976.
Col. Joan Astor (Barcelona).
Fluorescent under long wave UV

RM2487 Willemite with rhodochrosite and franklinite
Sterling Hill, Franklin Mining District, Ogdensburg, Sussex, New Jersey, United StatesA really good sized specimen in which we highlight various orange willemite crystals, the main one is doubly terminated. They are included in rhodochrosite and on a matrix with franklinite crystals. This specimen is from the Renaud Vochten collection. The intense fluorescence of willemite stands out with a yellowish-green emission under short-wave ultraviolet light. Renaud F.C. Vochten (8 December 1933 - 29 July 2012), professor of mineralogy at the State University of Antwerpen (Belgium), with a species dedicated: vochtenite [link].
Size: 11.1 x 7.5 x 6.7 cm.
Main crystal: 1.8 cm.
Found in ca. 1989.
Col. Renaud F.C. Vochten (Bélgica).
Fluorescent under short wave UV

RM2496 Calcite after glauberite
Camp Verde, Yavapai Co., Arizona, United StatesThis specimen is one of the well-known calcite after glauberite pseudomorphs from Arizona. This aesthetic floating specimen shows interpenetrated crystals, very well defined faces and edges and a delicate cream tone. A classic by itself.
Size: 3.9 x 2.4 x 2.1 cm.
RM2495 Calcite after glauberite
Camp Verde, Yavapai Co., Arizona, United StatesThis specimen is one of the well-known calcite after glauberite pseudomorphs from Arizona. This aesthetic floating specimen shows interpenetrated crystals, very well defined faces and edges and a delicate cream tone. A classic by itself.
Size: 4 x 3.9 x 2.7 cm.
RM2494 Calcite after glauberite
Camp Verde, Yavapai Co., Arizona, United StatesThis specimen is one of the well-known calcite after glauberite pseudomorphs from Arizona. This aesthetic floating specimen shows interpenetrated crystals, very well defined faces and edges and a delicate cream tone. Good size. A classic by itself.
Size: 5.7 c 2.6 x 2.2 cm.
RM2493 Calcite after glauberite
Camp Verde, Yavapai Co., Arizona, United StatesThis specimen is one of the well-known calcite after glauberite pseudomorphs from Arizona. This aesthetic floating specimen shows interpenetrated crystals, very well defined faces and edges and a delicate cream tone. Good size. A classic by itself.
Size: 5.2 x 2.9 x 2.9 cm.
Classic locality
RM2480 Opal
Opal Butte, Morrow Co, Oregon, United StatesAn extremely glassy opal specimen, transparent to translucent, with bluish to golden tones. An excellent specimen of opal from this classic American locality. It shows some fluorescence under ultraviolet (LW) light. An old piece from the A. Trigo collection (Mataró).
Size: 4.7 x 4.1 x 1.6 cm.
Found in ca. 1991.
Col. Antonio Trigo (Mataró).
Fluorescent under long wave UV

RM2475 Fluorite and sphalerite
Elmwood Mine, Carthage, Smith Co., Tennessee, United StatesGood sized fluorite crystal from this classic North American mine. It shows the cube shape with staggered growths on one edge, along with polysynthetic growths on the faces. Translucent to transparent, bright and with a violet tone that shows geometric color zoning, more intense on the edges. With a minor "matrix" of sphalerite.
Size: 5 x 4.1 x 2.6 cm.
Main crystal: 4 cm edge/arista
Found in ca. 1988.
Col. Antonio Trigo (Mataró).
Fluorescent under long wave UV

RM2415 Covellite
Leonard Mine, Butte, Butte-Silver Bow, Montana, United StatesLaminar rosette-shaped covellite crystals, excellent luster and with an intense violet to purple color, with an aesthetic iridescence. They are disposed on a matrix with pyrite and quartz. The covellite crystal specimens from Butte are highly appreciated by collectors and possibly the best in the world for the species, with only a few exceptions like Sardinia ones, but even those are not as sharp. The quality of this piece is simply excellent. Nowadays, specimens with this fine crystals are rarely seen.
Size: 9.2 x 8.5 x 4 cm.
Main crystal: 2.2 cm.
Found in ca. 1941.
Classic locality
RM2249 Coconinoite
Jomac Mine, White Canyon, San Juan Co., Utah, United StatesOn a sandstone matrix some yellow crusts of coconinoite formed by small tabular to micaceous crystals. This sample has been analyzed by SEM-EDS and we will send the results to the buyer.
Size: 8.2 x 7.4 x 4.2 cm.
Presents radioactive activity.

RM2257 Rhodochrosite with quartz
Animas Mining District, Silverton, San Juan Co., Colorado, United StatesExcellent 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.

RM2181 Baryte "rose"
Lake Thunderbird area, Norman, Cleveland Co., Oklahoma, United StatesExcellent, sculptural, two-sided baryte "rose" from Oklahoma. Oxidized sand grains are included in the baryte crystal structure with colorful effect. Essentially a floater. The hole adds much aesthetics. Baryte was precipitated in interconnected voids in the rock, probably from barium-rich marine waters that covered the Permian Garber Sandstone during or shortly after its deposition about 250 million years ago. The rose-like concretions incorporated the iron-stained quartz sand grains and thus acquired the red color of the host Garber Sandstone (online). These are the official Oklahoma State Rock.
Very interesting article in Mineralogical Record July-August 2008.
Size: 6.2 x 4.6 x 4.2 cm.
Col. Arguijo (Barcelona).
Classic locality
RM2182 Baryte "rose"
Lake Thunderbird area, Norman, Cleveland Co., Oklahoma, United StatesExcellent, sculptural, two-sided baryte "rose" from Oklahoma. Oxidized sand grains are included in the baryte crystal structure with colorful effect. Essentially a floater. The hole adds much aesthetics. Baryte was precipitated in interconnected voids in the rock, probably from barium-rich marine waters that covered the Permian Garber Sandstone during or shortly after its deposition about 250 million years ago. The rose-like concretions incorporated the iron-stained quartz sand grains and thus acquired the red color of the host Garber Sandstone (online). These are the official Oklahoma State Rock.
Very interesting article in Mineralogical Record July-August 2008.
Size: 5.8 x 5.5 x 3.2 cm.
Col. Arguijo (Barcelona).
RM2167 Carnotite
Oljeto Mesa, Monument Valley-Navajo Country, Goulding, San Juan Co., Utah, United StatesFor uranium mineral collectors, this carnotite of an intense yellow color, formed by numerous globular aggregates of crystals, covering the surface of the sandstone matrix. An American classic, labeled E. Kucera (Barcelona).
Size: 5.7 x 2.7 x 1.3 cm.
Col. Manchion (Barcelona).
Presents radioactive activity.

RM2105 Spinel
Green Monster Mountain, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, United StatesRich specimen formed by numerous spinel crystals showing octahedral form, black colour, very brilliant and well defined faces and edges. Sample is accompanied by the label of Douglas "Doug" Toland, with notes those indicates it could be gahnite or chromite, but the semi-quantitative analysis done with SEM-EDS microscopy shows that it is spinel, not identified in the mine before. It is accompanied by probably grossular and chlorite. A good specimen for the species and for this cold locality.
Size: 4.8 x 4.7 x 4.5 cm.
Main crystal: 4 mm.
Found in 1977.
Ex. Douglas Toland.
Analyzed specimen with report

RM2113 Pyromorphite
Bunker Hill Mine, Bunker Hill properties, Kellogg, Shoshone Co., Idaho, United StatesBunker Hill pyromorphite specimens are among the most appreciated by collectors worldwide. This specimen shows a druse of barrel-shaped crystals with an excellent color and brightness, some of them doubly terminated and with a good size. It is increasingly difficult to find samples of this quality at a reasonable price.
Size: 6 x 5.2 x 4.5 cm.
Main crystal: 5 mm.
Found in 1998.
Classic locality
RM2080 Kinoite and Hydroxyapophyllite-(K)
Christmas Mine, Dripping Spring Mts., Christmas, Gila Co., Arizona, United StatesVery aesthetic specimen of kinoite from this famous American mine. It is a druse formed by small crystals of this rare silicate of calcium and copper, very characteristic of this mine, which are partially covered by brilliant and transparent crystals of Hydroxyapophyllite-(K). We also observe the kinoite as darker globular aggregates. Pure aesthetics and brightness. The best kinoites came out for a short time in the 70s from this Arizona mine, and specimens show up only rarely on the market.
Size: 7.3 x 5.5 x 4.8 cm.
Found in ±1975.
Col. A. Arguijo (L'Hospitalet de Llobregat).
Classic locality

RM2069 Johannsenite with Axinite-(Mn) and Quartz
Iron Cap Mine, Santa Teresa Mts., Aravaipa, Graham Co., Arizona, United StatesJohannsenite is a rare calcium and manganese silicate of the pyroxene group. In this specimen it appears forming aggregates of sharp prisms, with dark green color, accompanied by tabular lanceolate crystals of axinite-(Mn) of greenish tones and quartz crystals. A good-sized specimen of an unusual species.
Size: 7.2 x 5.8 x 5.5 cm.
Main crystal: 7 mm.
RM2047 Rosasite with calcite
Silver Hill mine group, Waterman Mts., Silver Hill, Pima Co., Arizona, United StatesA very esthetic and good size specimen formed by several globular aggregates of acicular crystals of rosasite, of bluish green color, some partially covered by bright and transparent calcite crystals. It is accompanied by smithsonite and in a goethite matrix.
Size: 8.5 x 7.5 x 4 cm.
Main crystal: 3 mm aggr.
Found in ±1989
Col. Manchion (Barcelona) #445 E. Kucera (1989).

RM2062 Agate (var: Agatized coral)
Ballast Point, Tampa Bay, Tampa, Hillsborough Co., Florida, United StatesAgatized coral with marked bands. In a very visible coral matrix. Filled inside with botryoidal and banded chalcedony. The sparkly, translucent botryoids and banding have a pleasing variety of honey-brown and creamy colors. Very aesthetic and unusual in the marked. Fluoresces in a light-blue color under a long wave fluorescent light.
Size: 11 x 4.5 x 1 cm.
Col. A. Arguijo (L'Hospitalet de Llobregat)
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