Rosell Minerales

Doubly terminated quartz crystal of the Compostela hyacinth variety. In a gypsum matrix. It belongs from the former Joan Astor collection (Barcelona). The label indicates locality as Villar del Arzobispo (Valencia), a locality near Domeño.

Size: 6.5 x 5.2 x 3.9 cm.
Main crystal: 2 cm.
Found in ±1978

Col. Joan Astor (Barcelona).

Classic pineapple of hematoid quartz, var. Compostela hyacinth, with good brilliance, complete and in a gypsum crystals matrix.

Size: 7.2 x 4.5 x 4.2 cm.
Main crystal: 3.6 cm. aggr.
Found in ±2016

Classic locality

Very aesthetic group of deep green epidote fan-shaped aggregates on matrix. Epidotes have a good luster and intense green colour. There are some gemmy quartz crystals emerging from the epidote. The original label we will send to the buyer indicates that those crystals are clinozoisite, but recent studies show that all the analyzed specimens are epidote (Calvo, M., Subías, I. (2017): Epidote (not clinozoisite) and andradite garnet from Los Serranos quarry, Cabezo Negro, Albatera, Alicante. Mineral Up, 4:44-47).

 

Size: 6.8 x 6.2 x 4.3 cm.
Main crystal: 1 cm. aggr.
Found in 2012.

hese specimens are showing a complete pseudomorph of digenite (trigonal, Cu9S5) after pyrite (cubic, FeS2). We can see that crystals preserve the original cubic shape, with slightly curved edges and faces partially covered with greenish-colored malachite. A Spanish curiosity for pseudomorph lovers. We will send analysis to the buyer.

Size: 4.2 x 3.8 x 3.4 cm.
Main crystal: 3 x 3 mm.
Found in 2017.

Analyzed specimen with report

These specimens are showing a complete pseudomorph of digenite (trigonal, Cu9S5) after pyrite (cubic, FeS2). We can see that crystals preserve the original cubic shape, with slightly curved edges and faces partially covered with greenish-colored malachite. A Spanish curiosity for pseudomorph lovers.

Size: 5.2 x 2.8 x 2.5 cm.
Main crystal: 5 x 4 mm.
Found in 2017.

These specimens are showing a complete pseudomorph of digenite (trigonal, Cu9S5) after pyrite (cubic, FeS2). We can see that crystals preserve the original cubic shape, with slightly curved edges and faces partially covered with greenish-colored malachite. A Spanish curiosity for pseudomorph lovers.

Size: 5.1 x 4.4 x 2.8 cm.
Main crystal: 3 x 3 mm.
Found in 2017.

Very aesthetic quartz (eisenkiesel or Jacinto de Compostela var.) crystal, showing defined faces and edges, with a good size for the locality. Perfect luster, with deep red color. In a gypsum matrix. From a different Spanish locality than usual ones.

Size: 6.3 x 4.5 x 3.5 cm.
Main crystal: 17 x 8 mm.

Excol. J.C. Tarín

Very aesthetic quartz (eisenkiesel or Jacinto de Compostela var.) crystal, showing defined faces and edges, with a good size for the locality. Perfect luster, with deep red color. In a gypsum matrix. From a different Spanish locality than usual ones.

Size: 7.2 x 5.5 x 2.8 cm.
Main crystal: 22 x 10 mm.
Found in 2016.

Group of strontianite crystals with an elongated pyramidal habit, forming bundles and aggregates, with color between white to colorless. These specimens appeared in a concrete area of the mine Oriolana (Busot, Alicante) and initially were identified as aragonite or calcite. Further analysis indicated that this was strontianite with some calcium. It indicates that the crystals are zoned and its composition varies within the crystal. They were determined strontianita (majority), celestite, calcite with some quartz (probably due to mechanical mixtures).

Size: 7.2 x 5.5 x 4.5 cm.
Main crystal: 4 mm.
Found in 2011.

Fluorescent under long wave UV

Group of strontianite crystals with an elongated pyramidal habit, forming bundles and aggregates, with color between white to colorless. These specimens appeared in a concrete area of the mine Oriolana (Busot, Alicante) and initially were identified as aragonite or calcite. Further analysis indicated that this was strontianite with some calcium. It indicates that the crystals are zoned and its composition varies within the crystal. They were determined strontianita (majority), celestite, calcite with some quartz (probably due to mechanical mixtures).

Size: 9.2 x 7.0 x 3.8 cm.
Main crystal: 3 mm (aggreg).
Found in 2011.

Fluorescent under long wave UV

Very aesthetic quartz (eisenkiesel or Jacinto de Compostela var.) crystal, showing defined faces and edges, with a good size for the locality. Perfect luster, with deep red color. In a gypsum matrix with another small crystal. From a different Spanish locality than usual ones.

Size: 6.4 x 4.5 x 4.2 cm.
Main crystal: 15 x 8 mm.
Found in 2014.

Very aesthetic quartz (eisenkiesel or Jacinto de Compostela var.) crystal, showing defined faces and edges, with a reasonable size for the locality. Perfect luster and some transparency, with deep red color. In a gypsum matrix. From a different Spanish locality than usual ones.

Size: 5.1 x 3.2 x 2.9 cm.
Main crystal: 16 x 7 mm.
Found in 2014.

Group of datolite crystals, very rich in faces, translucent-white and well defined. They are on a matrix with calcite and quartz, with some epidote-clinozoisite. A piece of a well-known Spanish quarry from where nowadays is very difficult obtain samples because they are not making new blastings.

Size: 6.5 x 4.5 x 3.7 cm.
Main crystal: 4 x 3 mm.
Found in ca. 2005.

A good size crystal of teruelite, a variety of dolomite, from the Valencian cut in the CV-35 road well known for these sized specimens. The crystal shows the rhombohedron, brown and translucent under the light. It is included in a solid matrix of gypsum.

Size: 8.8 x 5.3 xv 4.4 cm.
Main crystal: 30 x 20 mm.

Group of strontianite crystals with an elongated pyramidal habit, forming bundles and aggregates, with color between white to colorless. These specimens appeared in a concrete area of the mine Oriolana (Busot, Alicante) and initially were identified as aragonite or calcite. Further analysis indicated that this was strontianite with some calcium. It indicates that the crystals are zoned and its composition varies within the crystal. They were determined strontianita (majority), celestite, calcite with some quartz (probably due to mechanical mixtures). 

Size: 8,3 x 6,4 x 3,6 cm.
Main crystal: 3 mm (aggreg).
Found in 2011

Fluorescent under long wave UV