- Home About RM Minerals
- Virtual Photo Museum Blog RM Contact
- Microscopy and instruments How to Buy Disclaimer
Copyright 2010-2024
www.rosellminerals.com
Brilliant specimen formed by globular aggregates of orpiment crystals, with good orange-yellow color. They are accompanied by brilliant acicular crystals of realgar with deep red color, transparent and defined. It is accompanied by barite crystals, pyrite and pyrrhotite. A different and quality specimen for this classic Peruvian mine.
A very nice specimen with an intense green globular aggregate of malachite partially covered with quartz, perfectly disposed on a matrix of brilliant quartz crystals and chrysocolla. Excellent brilliance and good aesthetics.
Good sized specimen that shows large groups of clinoatacamite crystals with pseudorhombohedral shape, with intense green color, brilliance and transparence. They are disposed as isolated individuals those stand on a matrix of small but brilliant quartz crystals, with blue tones of the chrysocolla, green for the malachite and with gypsum. A remarkable and definitive piece from this Peruvian mine.
In this specimen we can find two of the most interesting species of this Peruvian mine: clinoatacamite and atacamite. The first one is presented as pseudorhombohedral good sixed crystals, with an intense green color and translucent. Well defined faces and edges and isolated, allowing to observe them perfectly. The atacamite is presented as a tabular prismatic crystal, also with faces and sharp edges and bright green color. Matrix is covered by brilliant quartz crystals which transparence allow us to see green tones of the malachite.
This good size specimen is covered by botryoidal aggregates of chrysocolla, showing an intense blue turquoise, with greenish reflections and excellent brightness. On the crisocola we can observe small crystals of hyaline quartz, some doubly terminated, those give to the specimen a particular aesthetics. In Perú they named these samples as Blue Andean Opal.
Aesthetic specimen of chalcopyrite, very brilliant, with defined but complex crystals, on which a well developed rhombohedral siderite have grown, interpenetrating and showing rough faces. They show a uniform honey color. These specimens on matrix are rarely seen in the market and stand out for their beauty and mineralogical interest.
Aesthetic specimen of chalcopyrite, very brilliant, with defined but complex crystals, on which a well developed rhombohedral siderite have grown, interpenetrating and showing rough faces. They show a uniform honey color. These specimens on matrix are rarely seen in the market and stand out for their beauty and mineralogical interest.
Brilliant, transparent to translucent, tabular baryte crystals on edge are aesthetically and partially covered by colorful, rich orange color, orpiment botryoids from this classic Peruvian mine. With a few gemmy, blood-red realgar prisms.
Only a handful of localities those offer us this quality coquimbite crystals. In this specimen we can enjoy a hexagonal shape crystal of this rare iron and aluminium sulfate showing an intense violet color under fluorescent light or LED type. It is accompanied by numerous yellow metavoltine crystals, along with fibrous halotrichite. Note that under the magnifying glass we can navigate in a world of brilliant crystals, some of which of krausite species (yellowish to grey transparent). We left this identification pleasure to the collector. Regarding its environmental stability, this sample has been stored during more than five years without further alteration.
A huge size rhodochrosite crystal with an intense red-pink color and well defined scalenohedral forms. Good color and transparence. On a solid rocky matrix with quartz.
This specimen shows a very well developed Coquimbite crystals, with an intense violet color. Matrix is formed by white fibrous halotrichite with some orange to yellow Mg-copiapite. Embeded in the halotrichite matrix some small doubly terminated krausite crystals. A complete specimen...
Very interesting galena crystal, remarkable for its crystallography. It presents the cube and octahedron faces with a very balanced proportion. Brilliant, well disposed on a matrix with quartz crystals with an elongated prism an some brilliant pyritohedrons. A Peruvian aesthetic especimen.
Groups of rhombohedral crystals of rhodochrosite, with faces and edges very well defined and slightly curved. Their color is intensely pink and they contrast against a matrix coated by quartz crystals. A huge size and very remarkable specimen for this Peruvian mine.
A huge size specimen formed by a rich groups of brilliant atacamite crystals, showing elongated forms, intense green color and with transparence. We can observe several clinoatacamite crystals with pseudocubic or hexagonal forms, easy to be identified. Accompanied by scalenohedral calcite crystals, with brilliant quartz. A aesthetic display specimen.
A very aesthetic specimen from Lily mine showing a large group of atacamite crystals, elongated, deep green color, brilliant and transparent. Some of them are included in very sharp gypsum crystals. They are disposed on a matrix coated by light blue crisocola. We have not observed the presence of clinoatacamite. A sample with an elegant presence.
In this specimen we can find two of the most interesting species of this Peruvian mine: clinoatacamite and atacamite. The first one is presented as pseudohexagonal cyclic crystals, wiyth an intense green color. Well defined faces and edges and isolated, allowing to observe them perfectly. The atacamite is presented as tabular prismatic crystals, also with faces and sharp edges, bright green. Matrix is covered by brilliant quartz crystals which transparence allow us to see blue tones of the chrysocolla and malachite.
A specimen formed by some tetrahedrite crystals of very good size. They show faces of the positive and negative tetrahedron, very sharp and rich in faces. Some of them are coated with a thin golden patina of chalcopyrite, a very aesthetic rarity. They are accompanied by bright calcite that partially cover with a geometrical disposition. A specimen of great aesthetic and interesting by the size of its crystals.
Of this specimen I'm not sure if emphasize its size or defined faces and edges, or both. It is a sample for lovers of crystallography to those can give good moments! Brilliance, color, marked faces, rich in facets... An unique opportunity to have a crystal of this quality for the species.
A very interesting cluster of sharp epidote crystals showing a developed striated prism and parallel growth. Terminal faces are defined by various pinacoids. The brilliance is excellent and the deep green color, near black in thick crystals, could be perfectly observed when light crosses through them. From a Peruvian locality not well represented in collections. Take a look in Mineralogical Record Tom's Online.
A rich group of lenticular gypsum crystals forming rosettes. Some of them are well developed but with another shape, lanceolated and showing swallowtail twin. These are very transparent, defined faces and edges and very aerial disposed on the matrix. Accompanied by some cubic halite transparent and colorless crystals.
Gypsum fluorescence under ultraviolet source is excellent, but the phosphorescence is the most intense and lengthy I've never seen before. An uncommon and aesthetic combination.
Long wire silver crystal aprtially covered by greyish acanthite. It is very aerial disposed on a matrix with quartz, silver and some samll acanthite crystals. It has grown on a quartz crystal as a base. Very aesthetic.
Druse of tetrahedrite crystals with defined faces and edges. Good brilliance, with a metallic-gray tone. They show complex interpenetrating faces. Accompanied by groups of hyaline quartz crystals forming rosettes. Very aesthetic. With sphalerite in the matrix. From a classic Peruvian mine.
A very rich group of tetrahedrite crystals with an intense metallic luster and deep black color, with well defined faces and edges. Faces show complex growth and some vertices are truncated by opposite tetrahedron faces. They are accompanied by groups of sphalerite crystals, complex forms, easily distinguished by its grayish dull sheen. Highlight the intense orange fluorescence of this sphalerite probably due to the presence of cadmium in its crystal lattice. From the Jaqui adit, a diferent locality not well represented in collections.
This specimen is very rich in lanceolate clinozoisite greenish crystals, bright and sharp. They are accompanied by groups of quartz with well-developed prism according to the main axis. A Peruvian locality not well represented in collections.
This specimen shows several mineral species. The matrix which "supports" all of them is a group of huge size galena crystals with sharp cube-octahedral faces. Partially covering them we can see large groups of flattened realgar crystals. As alteration of these realgar crystals, due to the light, we have a patina, between yellow to orange, pararealgar. Between these galena crystals some orpiment aggregates, with a very intense yellow color.
We would like to emphisize in this specimen the presence of numerous seligmanite (PbCuAsS3) prismatic crystals, with a luster that makes them stand out. Evidently magnification is necessary to enjoy all their forms. Accompanied by chalcopyrite, pyrite and quartz. As you can see, it is a complete and representative specimen from this Peruvian mine.