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Microcline is one of the most common feldspar minerals. It can be colorless, white, cream to pale yellow, salmon pink to red, or bright green to blue-green. Microcline forms short prismatic or tabular crystals that are often of considerable size: single crystals can weigh several tons and reach yards in length. Crystals are often multiply twinned, with two sets of fine lines at right angles to each other. This gives a plaid effect that is unique to microcline among the feldspars. The nice patch of Quartz crystals makes this a spectacular piece.
This is a quality specimen that would be a beautiful addition to any new or existing rock collection.
Name: Microcline and Quartz
Specimen Size: Cabinet-Sized
Dimensions: 67x55x28 mm / 2.6x2.2x1.1 inches
Weight: 116 grams / 4.1 oz
Origin: Czarne - Poland
Cubic and crystallized pyrite matrix with calcite crystal cluster. This top Peruvian specimen is in very good condition. Would be a beautiful addition to any new or existing collection.
Name: Pyrite with Calcite Crystal Cluster
Specimen Size: Miniature-Sized
Dimensions: 51x40x19 mm / 2x1.6x0.7 inches
Weight: 60.2 Grams / 2.1 oz
Origin: Mined in Peru
Amphibole is a group of dark-colored, complex silicate minerals that form in a variety of geological settings. The amphibole group includes several mineral species, such as hornblende, tremolite, actinolite, anthophyllite, and others. Each variety has its own unique chemical composition and physical properties.
Amphibole minerals can exhibit a range of colors, including dark green, black, brown, and even colorless. They often have a prismatic crystal habit, forming elongated crystals with distinct cleavage angles. They are commonly found in igneous and metamorphic rocks. They crystallize in magma and can also form during metamorphism when pre-existing rocks are subjected to high pressure and temperature.
This top specimen is in very good condition. Would be a beautiful addition to any new or existing collection.
Name: Amphibole on Matrix Crystal
Specimen Size: Miniature-Sized
Dimensions: 52x49x35 mm / 2x1.9x1.4 inches / Crystal is 11 mm
Weight: 63.44 Grams / 2.2 oz
Origin: Mined in Czech Republic
This is an attractive specimen consisting of natural pale gray transparent crystals of Calcite on a green crystal matrix from Morocco. Very beautiful material.
Calcite is found throughout the world in sedimentary, metamorphic, and igneous rocks. Some geologists consider it to be a "ubiquitous mineral" - one that is found everywhere. Calcite is the principal constituent of limestone and marble.
Name: Calcite Crystal
Specimen Size: Cabinet-Sized
Dimensions: 75x59x28 mm/ 2.9x2.3x1.1 inches
Weight: 153.7 Grams / 5.4 Ounces
Origin: Mined in Morocco
Celestite, also known as celestine, typically ranges in color from light blue to pale blue, though it can also be colorless, white, or shades of yellow and pink. Celestite is a strontium sulfate mineral which crystallizes in the orthorhombic crystal system, typically forming well-defined, prismatic crystals. This celestite specimen is a nice example of a prismatic crystal form.
Celestite is often associated with calming energy and is believed to aid in meditation and spiritual development. It is said to promote mental clarity and enhance communication with higher realms.
Name: Celestite Prismatic Crystal Cluster
Specimen Size: Cabinet-Sized
Dimensions: 71x32x38 mm / 2.8x1.3x1.5 inches
Weight: 61 Grams / 2.2 Ounces
Origin: Mined in Morocco
This is an attractive shiny spray of metallic stibnite crystals. This outstanding specimen came from the Xikuangshan mine of China.
Stibnite is a lead-gray mineral occurring as striated prismatic crystals, that are made up of antimony sulfide and is the main ore of antimony. It often forms groups of long, shiny metallic crystals radiating out at different angles.
NOTE: Stibnite (antimony) is toxic and can be harmful if inhaled or swallowed. While a crystal sitting on your shelf doesn't pose a health risk you should always wash your hands after handling and keep it out of reach of children.
Name: Stibnite Spray
Specimen Size: Large Cabinet-Sized
Dimensions: 132x49x38 mm / 5.2x1.9x1.5 inches
Weight: 271 Grams / 9.5 Ounce
Origin: Mined in Xikuangshan Mine, China
Cubic and crystallized Pyrite matrix with Marmatite crystal cluster.
Some of the more important Colorado localities for specimens of well-crystallized pyrite include mines at cli- max, Gilman, Leadville, Rico, Ouray, Telluride, Creede, Alicante, Alice, and State Bridge. Specimens from each of these localities often have distinctive crystal habits and mineral associations. The Eagle mine is probably best known for its pyritohedral Pyrite specimens. This cluster is a good representative Eagle mine Pyrite showing typical striated pyritohedra with sharp, lustrous faces plus some Marmatite opaque black iron-rich crystals.
This top specimen is in very good condition. Would be a beautiful addition to any new or existing collection.
Name: Pyrite with Marmatite Crystal Cluster
Specimen Size: Cabinet-Sized
Dimensions: 65x44x42 mm / 2.6x1.7x1.6 inches
Weight: 248 Grams / 8.7 oz
Origin: Mined in Gilman, Colorado, USA
Cubic and crystallized Pyrite matrix with Marmatite crystal cluster.
Some of the more important Colorado localities for specimens of well-crystallized pyrite include mines at cli- max, Gilman, Leadville, Rico, Ouray, Telluride, Creede, Alicante, Alice, and State Bridge. Specimens from each of these localities often have distinctive crystal habits and mineral associations. The Eagle mine is probably best known for its pyritohedral Pyrite specimens. This cluster is a good representative Eagle mine Pyrite showing typical striated pyritohedra with sharp, lustrous faces plus some Marmatite opaque black iron-rich crystals.
This top specimen is in very good condition. Would be a beautiful addition to any new or existing collection.
Name: Pyrite with Marmatite Crystal Cluster
Specimen Size: Cabinet-Sized
Dimensions: 70x52x34 mm / 2.8x2x1.3 inches
Weight: 209.7 Grams / 7.4 oz
Origin: Mined in Gilman, Colorado, USA
Cubic and crystallized pyrite matrix with Marmatite crystal cluster.
Some of the more important Colorado localities for specimens of well-crystallized pyrite include mines at cli- max, Gilman, Leadville, Rico, Ouray, Telluride, Creede, Alicante, Alice, and State Bridge. Specimens from each of these localities often have distinctive crystal habits and mineral associations. The Eagle mine is probably best known for its pyritohedral Pyrite specimens. This cluster is a good representative Eagle mine Pyrite showing typical striated pyritohedra with sharp, lustrous faces plus some Marmatite opaque black iron-rich crystals.
This top specimen is in very good condition. Would be a beautiful addition to any new or existing collection.
Name: Pyrite with Marmatite Crystal Cluster
Specimen Size: Cabinet-Sized
Dimensions: 61x39x28 mm / 2.4x1.5x1.1 inches
Weight: 123.9 Grams / 4.4 oz
Origin: Mined in Gilman, Colorado, USA
Cubic and crystallized pyrite matrix with Marmatite and Quartz crystal cluster.
Some of the more important Colorado localities for specimens of well-crystallized pyrite include mines at cli- max, Gilman, Leadville, Rico, Ouray, Telluride, Creede, Alicante, Alice, and State Bridge. Specimens from each of these localities often have distinctive crystal habits and mineral associations. The Eagle mine is probably best known for its pyritohedral Pyrite specimens. This cluster is a good representative Eagle mine Pyrite showing typical striated pyritohedra with sharp, lustrous faces plus some Marmatite opaque black iron-rich crystals.
This top specimen is in very good condition. Would be a beautiful addition to any new or existing collection.
Name: Pyrite with Marmatite and Quartz Crystal Cluster
Specimen Size: Cabinet-Sized
Dimensions: 61x47x29 mm / 2.4x1.8x1.1 inches
Weight: 191.8 Grams / 6.8 oz
Origin: Mined in Gilman, Colorado, USA
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