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RM2989   Zunyite

Qualat-e-Balat salt dome, Bandar Abbas, Hormozgan, Iran

Very sharp single zunyite crystal with good luster, coloured by red hematite inclusions and with some small brilliant foliaceous hematite partially included in faces. Very clean tetrahedron form, truncated by cubic faces. Tetrahedron edge is 9.7 mm. A good sized and perfect crystallographic specimen of this unusual species, a rare sorosilicate of aluminum and chlorine, with fluorine. Analized by X-ray difraction and X-ray fluorescence.


Size: 9.7 x 9.5 x 9.2 mm.
Main crystal: 9.7 mm arista/edge.
Found in 2018.

Analyzed specimen with report


Price: 40 €Reserved

 

RM2985   Hydroboracite

Bigadiç Mine, Bigadiç, Balikesir, Turkey

Excellent specimen of hydroboracite, with a very good size, formed by numerous radial aggregates of acicular crystals. Very good brilliance, transparence and with color zoning, between colorless to slightly honeyed. This specimen has a former owner's label fixed to the back side. A display museum specimen.


Size: 8.8 x 6.7 x 4.3 cm.
Main crystal: 2.8 cm.



Price: 190 €Buy
 

RM2975   Fluorite, quartz and calcite

Qinglong Mine, Qinglong County, Qianxinan, Guizhou, China

These fluorite crystals have a cubic appearance with growths in tiles on the surfaces of the faces. In this specimen we observe a more intense violet to purple color on the edges and on the outside of the crystals, while inner core has a soft green color. They are disposed on a matrix with quartz crystals. Under shortwave ultraviolet light they fluoresce bluish.


Size: 6.8 x 5.5 x 3 cm.
Main crystal: 2.1 cm. edge/arista.

Fluorescent under long wave UV
Price: 70 €Buy
 

RM2974   Fluorite and calcite

Qinglong Mine, Qinglong County, Qianxinan, Guizhou, China

Group of slightly beveled cubic fluorite crystals with polysynthetic growths on the faces and edges. They have a more intense purple color on the edges, very characteristic of these specimens from the Qinglong mine in China. Between translucent to transparent. They are disposed on a matrix with calcite and quartz.


Size: 7.8 x 7 x 3.5 cm.
Main crystal: 10 mm edge/arista.

Price: 120 €Buy
 

RM2973   Fluorite and quartz

Qinglong Mine, Qinglong County, Qianxinan, Guizhou, China

Group of fluorite crystals with a cubic shape, but with the edges and vertices beveled by forms of the trisoctahedron. These beveled edges display a deep purple color that contrasts with the rest of the crystal. They are translucent and stand out on a matrix with small quartz crystals. Under long-wave ultraviolet light they emit a bluish to violet color. A very aesthetic specimen.


Size: 8.2 x 5 x 5 cm.
Main crystal: 8 mm edge/arista.

Fluorescent under long wave UV
Price: 110 €Reserved

 

RM2836   Iowaite, var. chromium-bearing Iowaite, Stichtite, serpentine

Kaznakhtinskii massif, Ust-Koksinsky, Altai Republic, Russia

Compact mass of purple chromian iowaite with minor inclusions of greenish-brown serpentine. Iowaite is one of the former minerals on the locality and mostly replaced by stichtite, which forms a similar aggregates but is more light, lilac coloured.


Size: 7.6 x 4 x 2.7 cm.

 

RM2833   Native silver and pearceite-T2ac

Sarbaiskoe (Sarbai) deposit, Rudny, Kostanay, Kazakhstan

Rich specimen showing wire aggregates of native silver, curved, with curls, shiny and with a very aesthetic golden tone. Some have darker areas of acanthite. They are accompanied by small but well-formed hexagonal pearceite-T2ac crystals. With calcite matriz. This piece is surprising when looking at the cavities under magnification. It berlongs from the Sarbaiskoe deposit, the best known silver producing area in Kazakhstan. Very rare to find specimens from this locality.


Size: 5 x 4.8 x 3.1 cm.
Found in ±1990.

Price: 220 €Buy
 

RM2811   Achtaragdite, hydrogrossular-chlorite-carbonate pseudomorph

Akhtaragda River mouth, Vilyui River Basin, Mirninsky, Sakha Republic, Russia

Achtaragdite is a unique, rare and poorly understood pseudomorph, from this remote Siberian locality that is the Type Locality for grossular garnet. It is a variety of the grossular-hibschite garnet series and is (technically, according to mindat) a hydrogrossular-chlorite-carbonate pseudomorph after what was formerly considered to be wadalite or some other rare hydrogarnet. The real precursor mineral for these pseudomorphs is now considered to be helvite.


Size: 4.2 x 3.4 x 3.2 cm.

 

RM2810   Achtaragdite, hydrogrossular-chlorite-carbonate pseudomorph

Akhtaragda River mouth, Vilyui River Basin, Mirninsky, Sakha Republic, Russia

Achtaragdite is a unique, rare and poorly understood pseudomorph, from this remote Siberian locality that is the Type Locality for grossular garnet. It is a variety of the grossular-hibschite garnet series and is (technically, according to mindat) a hydrogrossular-chlorite-carbonate pseudomorph after what was formerly considered to be wadalite or some other rare hydrogarnet. The real precursor mineral for these pseudomorphs is now considered to be helvite.


Size: 4.7 x 4.5 x 3.9 cm.

Price: 55 €Buy
 

RM2809   Achtaragdite, hydrogrossular-chlorite-carbonate pseudomorph

Akhtaragda River mouth, Vilyui River Basin, Mirninsky, Sakha Republic, Russia

Achtaragdite is a unique, rare and poorly understood pseudomorph, from this remote Siberian locality that is the Type Locality for grossular garnet. It is a variety of the grossular-hibschite garnet series and is (technically, according to mindat) a hydrogrossular-chlorite-carbonate pseudomorph after what was formerly considered to be wadalite or some other rare hydrogarnet. The real precursor mineral for these pseudomorphs is now considered to be helvite.


Size: 6 x 4.3 x 3.6 cm.
Main crystal: 3 x 2.2 cm.

 

RM2775   Fluorite and quartz

Nikolaevskiy Mine, Dalnegorsk, Kavalerovo area, Primorskiy Kray, Russia

Dalnegorsk fluorite specimens are very difficult to photograph. This is the case of this piece formed by groups of cubic crystals, transparent, colorless, defined, with the edges of the cube beveled by the dodecahedron and inclusions of very curious shapes. It is accompanied by quartz crystals dotted with green chlorite. A very curious piece ...


Size: 6.8 x 4.4 x 4.3 cm.
Main crystal: 2.4 x 1.9 cm.

 

RM2724   Prase quartz and andradite

Sinerechenskoe skarn, Primorsky Krai, Russia

Group of prase quartz crystals, with good luster, very well defined and contrasting on a matrix covered by andradite crystals. A very aesthetic piece.


Size: 5.7 x 3.7 x 3 cm.

 

RM2725   Prase quartz, andradite and hedenbergite

Sinerechenskoe skarn, Primorsky Krai, Russia

Doubly terminated crystal of prase quartz, with a very good size. It shows an intense green color and polycrystalline growths on the faces of the prism. Very aerial and esthetic specimen on a matrix rich in small andradite crystals and green hedenbergite needles. A very aesthetic piece.


Size: 7.6 x 7 x 5.7 cm.
Main crystal: 5.9 cm.

 

RM2681   Graphite

Radigara, Ratnapura, Sabaragamuwa, Sri Lanka

Although the label of this specimen places the piece in Mozambique, we have no record of graphite specimens similar to this one in this African country. For another specimen from the same collection (Joan Astor) we can place it in the classical sites of the Ratnapura area, in Sri Lanka. Fibrous crystals with luster. More information can be found in the file of the specimen RM1836 [click here]. Very interesting classic.


Size: 5 x 4 x 2.5 cm.
Found in ± 1975.

Col. Joan Astor (Barcelona).
Classic locality


Price: 60 €Buy
 

RM2677   Corundum, var. ruby

Mysore corundum deposits, Mysore, Karnataka, India

Classic ruby crystals, with an intense purple color, arranged in a quartz-rich matrix. Especially rich and aesthetic specimen from India. The crystals are sharp, bright and translucent. They fluoresce under UV light. Former Joan Astor Collection.


Size: 6.8 x 4.3 x 4 cm.
Main crystal: 1.3 cm.
Found in ± 1976.

Col. Joan Astor (Barcelona).
Fluorescent under long wave UV


 

RM2672   Achtaragdite, hydrogrossular-chlorite-carbonate pseudomorph

Akhtaragda River mouth, Vilyui River Basin, Mirninsky, Sakha Republic, Russia

Achtaragdite is a unique, rare and poorly understood pseudomorph, from this remote Siberian locality that is the Type Locality for grossular garnet. It is a variety of the grossular-hibschite garnet series and is (technically, according to mindat) a hydrogrossular-chlorite-carbonate pseudomorph after what was formerly considered to be wadalite or some other rare hydrogarnet. The real precursor mineral for these pseudomorphs is now considered to be helvite.


Size: 3.8 x 3.3 x 2 cm.
Found in ± 1976.

Col. Joan Astor (Barcelona).


 

RM2669   Orthoclase, Moonstone var.

Meetiyagoda, Galle, Southern Province, Sri Lanka

This locality is known for its production of "moonstone", extracted from altered pegmatites. It is an unpolished specimen, very crystalline, translucent, with slightly greenish tones, and a very characteristic light effect called adularescence. Thin alternating layers of orthoclase and albite create the light interference in this material that is responsible for this effect. Moonstone is a feldspar close to orthoclase and microcline.


Size: 5.2 x 3.1 x 1.6 cm.
Found in ± 1977.

Col. Joan Astor (Barcelona).
Fluorescent under long wave UV


 

RM2595   Prehnite

Pune, Maharashtra, India

Globular aggregates of brilliant prehnite crystals, with a very uniform green hue.


Size: 7 x 3.8 x 3.3 cm.
Found in ±2004

Col. A. Trigo (Mataró).


Price: 40 €Buy
 

RM2605   Sulphur and calcite

Vodinskoe deposit, Samara Oblast, Russia

This is an exceptional sulphur specimen, both for this Russian mine and for the perfection of the crystals. In a cavity of the matrix several very well defined and doubly terminated crystals of sulphur are disposed, clearly showing the dipyramidal faces of different orders. With brilliance, translucent to transparent. With another group of crystals, one of them predominant, on sample side. On a matrix with scalenohedral calcite crystals. Specimens of this mine and with this fine quality are more than difficult to see. A sample from the Astor collection (Barcelona). You can find more information about this locality at geo.web.ru.


Size: 6.6 x 6.5 x 5.2 cm.
Main crystal: 1.4 cm.
Found in ±1998

Col. Joan Astor (Barcelona).
 

RM2542   Gyrolite and quartz

Malad Quarry, Malad, Mumbai, Maharashtra, India

Globular gyrolite aggregates, formed by radial crystals, brilliant, olive green in color. They are disposed on a matrix partially covered with quartz crystals. It belongs to the collection of Joan Astor, with a handwritten label and another typewritten.


Size: 9.7 x 4.6 x 3.8 cm.
Main crystal: 2 cm. aggreg.
Found in ±1977.

Col. J. Astor, Barcelona.


 

RM2497   Aluminium

Bulla Island, Caspian Sea, Gobustan, Azerbaijan

Small particles containing grains of native aluminum, an extreme rarity. In the images we can see that they are associated with magnetite. They most likely contain akdalaite, an oxide hydroxide of aluminum, which we have not confirmed due to the limitations of the electron microscopy technique. We will send report to the buyer.
The Bulla or Boulla is a mud volcano on the island of the same name, in the Baku archipelago, a few km SE of the city of Baku. The most intense eruptions occurred in 1857 and 1940, when erupting breccia volumes reached a few million cubic meters. The most interesting mineralization (native metals, akdalaite) is related to the ejection of the 1947 eruption.


Size: 1.8 x 1 mm.

Analyzed specimen with report


Price: 95 €Buy
 

RM2401   Stilbite-Ca and Fluorapophyllite-(K)

Wagholi Quarries, Wagholi, Poonah, Maharashtra, India

This sample shows various aggregates of lanceolate tabular stilbite crystals, with luster and transparence. They are disposed on an upholstered matrix of small crystals of the same species and prismatic crystals, slightly greenish and transparent, of fluorapophyllite- (K).


Size: 9.5 x 7.3 x 4.5 cm.
Main crystal: 2.2 cm.
Found in ca. 1986.

Col. J. Astor (Barcelona).
Classic locality


Price: 45 €Buy
 

RM2486   Gurimite

Gurim anticline, Hatrurim, Tamar, HaDarom, Israel

Gurimite is a very rare and chemically simple species. It is a barium vanadate, but in this sample we can observe the presence of P, very common on V minerals. This sample is from the type locality, the Gurim Anticline, in Israel. Aproved in 2013 and published in 2017. Specimen analyzed by Dr. M. Murashko. IMA2013-032. For extrem systematic collectors...


Size: 1.1 x 0.9 x 0.4 cm.

Ex. M. Murashko specimen.
Analyzed specimen with report


 

RM2447   Belomarinaite

Fissure Tolbachik Eruption 2012-2013, Plosky Tolbachik volcano, Tolbachik volcano, Kamchatka Krai, Russia

Extraordinary translucent laminar specimen of belomarinaite, an extremely rare sodium and potassium sulphate, of good size and with clearly visible crystalline forms. It refers to both chemistry and structure to aphthitalite. These sulfates are formed in saline deposits and in volcanic fumaroles, as is this case. This specimen comes from the type locality for the species. A unique opportunity for systematic collectors.


Size: 2 x 1.2 x 0.1 cm.
Found in ca. 2017.

Ex. M. Murashko specimen.
Type Locality
 

RM2444   Alumoåkermanite

Turii alkaline Massif, Turii Cape, Murmansk Oblast, Russia

Specimen of alumoåkermanite (IMA2008-049) from the pegmatites of the Kola peninsula. Honey coloured. It is probably accompanied by species such as cebollite and juanite those form a whitish vein. A very rare species, very visible in the polished section. Good size. It comes from the southern part of the Kola Peninsula.


Size: 3.5 x 3.1 x 1.9 cm.

 
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