Rosell Minerales

 
Currency
 
You are in > Home > Minerals

Catálogo de minerales

RM1402   Hübnerite with quartz

Adams Mine, Cement Creek, Eureka, San Juan Co., Colorado, United States

An excellent old classic from the American mineralogy. Really sharp crystals of hübnerite forming groups of parallel growths, some of them isolated. With the intense brown color and brilliance and an esthetic contrast with the snowy white matrix. Nowadays, it is very difficult to find specimens with this quality or any other quality...


Size: 8.8 x 4.5 x 3.8 mm.
Main crystal: 18 x 8 mm.

Ex. Schick collection


 

RM1378   Copper

Phoenix mine, Phoenix, Keweenaw Co., United States

An aesthetic arborescent copper specimen with several defined crystals, with good brilliance an colour. From a former collection.


Size: 7.8 x 5.0 x 1.8 cm.



 

RM1277   Willemite with calcite

Sterling Hill, Franklin Mining District, Ogdensburg, Sussex, New Jersey, United States

In this specimen we can enjoy some willemite prismatic crystals with good size, included in a matrix of white calcite. Willemite usually presents yellow-green fluorescence under shortwave UV light. Calcite from Franklin also highlights for the intense red fluorescence. A very interesting piece.


Size: 6.5 x 5.4 x 3.7 cm.
Main crystal: 27 x 14 mm.

Fluorescent under short wave UV
 

RM1273   Pyromorphite

Bunker Hill Mine, Bunker Hill properties, Kellogg, Shoshone Co., Idaho, United States

Barrel-shaped crystals of pyromorphite forming a druse from this American classic locality. It consists of a rich group of very brilliant crystals, color varies from olive green to yellowish and orange, rounded forms. They are disposed on a matrix of goethite. It is very uncommon find these specimens in the mineral market.


Size: 6.0 x 5.1 x 2.0 cm.
Main crystal: 4 x 3 mm.

 

RM1055   Smithsonite with calcite on limonite

Kelly Mine, Magdalena, Socorro Co., New Mexico, United States

Botryoidal aggregates of smithsonite with a very tastefull intense blue color, translucent and with some brilliance. They are partially covered by flattened calcite white crystals forming aesthetic rosettes. From a very interesting American locality.


Size: 7.5 x 6.0 x 3.8 cm.

 

RM1030   Copper

Keweenaw Peninsula, Michigan, United States

An interesting specimen of native copper showing laminar aggregates included within a solid slate matrix. A very different than usual for the species and locality.


Size: 9.5 x 5.4 x 3.5 cm.

 

RM890   Topaz on Rhyolite

The Cove (Topaz Valley), Thomas Range, Juab Co., Utah, United States

A huge size topaz crystal well disposed on the rhyolite matrix. It shows well defined faces and edges, excellent transparency and uniform toasted honey tone. It shows natural cleavage planes. A gem from a classic locality.


Size: 7.7 x 6.5 x 5.8 cm.
Main crystal: 38 x 8 mm.

 

RM862   Calcite with dolomite and chalcopyrite

Sweetwater Mine, Ellington, Reynolds, Missouri, United States

A very nice specimen from a classic American locality. A group of interpenetrated calcite crystals showing curvatures on their faces and edges. They are transparent to translucent and have a delicate yellow color with zonation. With small rhombohedral crystals of dolomite, peppered by microcrystals of chalcopyrite.


Size: 9.0 x 8.5 x 7.5 cm.
Main crystal: 5.2 x 1.8 cm.

 

RM863   Calcite with dolomite and chalcopyrite

Sweetwater Mine, F-5 Area, Ellington, Reynolds Co., Missouri, United States

A very nice specimen from a classic American locality. A group of doubly terminated crystals showing parallel growth and curvatures on their faces and edges. They are translucent and have a delicate yellow color. With small rhombohedral crystals of dolomite, peppered by microcrystals of chalcopyrite.


Size: 9.2 x 5.8 x 3.8 cm.
Main crystal: 7.2 x 2.5 cm.

 

RM891   Copper

Quincy Mine, Hancock, Houghton Co., Michigan, United States

Good sized specimen of native copper showing complex crystal faces, typical of these specimens, with good color, brilliance and aesthetics. This specimen is from the findings made in the mid-90 in this American mine. It has not been treated with chemicals, so its color and brightness are natural.


Size: 6.0 x 4.8 x 2.8 cm.
Found in ±1995.

Peso / weight: 141 g. - 4.97 oz.
 

RM892   Copper

Quincy Mine, Hancock, Houghton Co., Michigan, United States

Good sized and aerial specimen of native copper showing curved crystal faces, typical of these specimens, with good color and aesthetics. This specimen is from the findings made in the mid-90 in this American mine. It has not been treated with chemicals, so its color and brightness are natural.


Size: 9.0 x 6.0 x 2.5 cm.
Found in ±1995.

Peso / weight: 217 g. - 7.65 oz.
 

RM805   Bixbyite

Topaz Mountain, Thomas Range, Juab, Utah, United States

A brilliant and very sharp bixbyite crystal. A manganese oxyde well-known and appreciated by collector for its rich crystallographic forms. In this specimen we can see the cubic main form with vertex truncated by trapezohedron and a small triangular octahedron face. A crystallographic pleasure... Very aesthetically disposed on a volcanic rocky matrix. With an old display label.


Size: 4,5 x 4,0 x 3,7 cm.
Main crystal: 6 x 5 mm.



 

RM776   Fluorite with celestine, dolomite and calcite

Edward Kraemer & Sons Inc. Quarry, Clay Center, Ottawa Co., Ohio, United States

Group of fluorite crystals with faces and sharp edges. One of them shows a good size for the locality. Its intensely toasted honey color is very particular. Note that it is extremely fluorescent with a yellowish tone. It is accompanied by several tabular crystals of white celestite and a group of calcite. It is difficult to find in the market samples of this mine without damages (this only has a almost invisible small dent) since they "fall down" in the geodes. An aesthtic American classic.


Size: 10,0 x 5,7 x 6,3 cm.
Main crystal: 4,2 x 3,5 cm.
Found in 2007.

Fluorescent under long wave UV
 

RM722   Franklinite with willemite and calcite

Sterling Hill, Franklin Mining District, Ogdensburg, Sussex, New Jersey, United States

This specimen is notable for several reasons. On the one hand a very nice franklinite octahedron, an unusual iron and zinc oxide, with good size, and curved and brilliant faces (17 x 17 mm). On the back side it has some fractures that allow us see the metallic luster. On a matrix of calcite. On the other hand, we have a doubly terminated prismatic crystal of willemite, also with good size (17 x 10 mm). Willemite species usually presents fluorescence, and in this case, under shortwave UV light (also in the longwave UV), it has an intense yellowish green color. Calcite from Franklin is also notable for the intense red-orange fluorescence. In one specimen we have two species with good crystals and size.


Size: 4,5 x 3,7 x 2,8 cm.

Fluorescent under LW-UV and SW-UV lights
 

RM708   Cerussite "Jackstraw"

Flux Mine (Goshen Mine), Flux Gulch, Alum Gulch, Patagonia Mts., Harshaw, Santa Cruz Co., Arizona, United States

A huge size and top quality "Jackstraw" cerussite specimen. The "jackstraw" habit consists of numerous randomly oriented elongated crystals. The best known locality for this "jackstraw" type are those specimens from the Flux mine, in Arizona.
It is formed by a rich group of elongated cerussite crystals with an intense white color, divergent growth and good brilliance. In a limonite matrix. Both sides are mineralized. A classic specimen from this American locality. It was adquired by Gerard Vogel (Netherlands) in 1961, in California.


Size: 9,5 x 6,1 x 4,2 cm.
Main crystal: 27 x 3 mm.
Found in 1960's.

Ex-coll. Dr. Gerard Vogel (NL).
Fluorescent under long wave UV
 

RM493   Microcline, variety amazonite

Pikes Peak, Teller Co., Colorado, United States

Elegant crystal of amazonite, a variety of microcline, good size, from a classic American locality. This crystal shows many faces delimited by triclinic pinacoids, along with growth in the upper faces. Good color and transparency when the light hits on the edges.


Size: 5,2 x 4,8 x 3,5 cm.

 

RM444   Smithsonite with rosasite

Silver Hill mine group, Waterman Mts., Silver Hill, Pima Co., Arizona, United States

It is a brilliant smithsonite specimen from a mine not well represented and very uncommon in the collections, including the American collections. These zinc carbonate crystals show a polysynthetic growths of rhombohedrons, color between white to colorless, with a strong pearlescent luster and forming botryoidal aggregates. They are accompanied by blue-green rosasite, in spherical aggregates.
This specimen
is interesting for different reasons. The accompanying old label belongs to the Antigua Casa (former house) Soler Pujol of Barcelona, ​​known for its collections relating to the natural history sciences. We add to its history that this specimen was in the collection of Mr. Lluís Daunis, also from Barcelona. An old specimen from a interesting American locality.


Size: 7,3 x 5,5 x 3,5 cm.
Main crystal: 1 x 1 mm.
Found in ca 1960.

Ex-col. Daunis.


 
3