Minerals from Different Locations

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$25.00 M700c   Here is a very nice, above average quality Smokey Quartz cluster specimen.  It measures 3 1/4" x nearly 2 1/2" x 2" and has a natural shiny appearance.  These Crystals have been irradiated which enhances the dark Brown to Black color.  This crystal is an amazing work of nature.

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Quartz is the second most common mineral in the Earth's continental crust.  It is mainly composed of Silica or Silica based minerals.  Although Quartz is known by a variety of names, the most important distinction between types of Quartz is that of macro-crystalline, individual crystals visible to the unaided eye, and micro-crystalline, where aggregates of crystals are only visible under high magnification.  There are many forms of Quartz including Chalcedony, Amethyst, Citrine, and Carnelian which are results of mineral impurities or heat treatments.

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Smokey Crystal Quartz

$40.00 M701c  Here is a beautiful specimen of natural Malachite with Azurite in the rough.  It measures almost 5" x over 4" x 2 1/4" and is not polished.  This interesting mineral has frosty Green colors in different shades ranging from brighter to darker and almost black contrasted by Aqua Blue Azurite over an earth tone matrix. 

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Malachite is a Copper Carbonate mineral that often forms botryoidal, fibrous or stalagmitic masses.  It is often the result of the weathering of Copper Ores and is commonly found with Azurite, Goethite and Calcite.  It is typically associated with Copper deposits including Limestone which is the source of the Carbonate.  Malachite is found in many regions world wide and is usually shaded green in color.

malachite

Malachite


$20.00 M702b   This is a beautiful Landscape Quartz crystal.  This lovely smaller specimen measures almost 2 3/4" x nearly 1 7/8" x 1 1/4" and has a smooth polished finish on the top side of the specimen.  This piece has landscape like Chlorite inclusions making a gorgeous design and an excellent display.  The crystal tip as some dings and is reflected in our price.  Quartz crystals usually don't photograph well and this nice example is no exception.

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Quartz is the second most common mineral in the Earth's continental crust. It is mainly composed of Silica or Silica based minerals. Although Quartz is known by a variety of names, the most important distinction between types of Quartz is that of macro-crystalline, individual crystals visible to the unaided eye, and micro-crystalline, where aggregates of crystals are only visible under high magnification. There are many forms of Quartz including Chalcedony, Amethyst, Citrine, and Carnelian which are results of mineral impurities or heat treatments.

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Landscape Quartz

$12.00 M708b   Here is something different for the mineral collector.  This is an above average quality Erythrite specimen in matrix.  It measures 2 1/4" x nearly 1 5/8" x 7/8" and has not been polished.  The Erythrite is interspersed throughout the matrix piece and has a shiny bright Reddish Purple luster.  This material is from Morocco.

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Erythrite occurs as a secondary coating on arsenide minerals and is a bright crimson pink in color. The bright color or "Cobalt Bloom" was used to spot cobalt veins of ore. Most Erythrite is found in the form of crusts but specimens from Morocco have larger crystals of the unique  and attractive red-purple color.

erythrite

Erythrite

$20.00

M703c  Here is something different for the mineral collector.  This is an above average quality Coni Calcite specimen in matrix from Mexico.  It measures 4 1/8" x nearly 3 1/4" x almost 2" and has not been polished.  The various shaped Calcite crystals are interspersed in the matrix and have a naturally shiny luster. 

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Calcite is a Carbonate mineral that is most widely distributed on the Earth's surface.  It is a common constituent of sedimentary rocks with Limestone in particular.  A Calcite formation can take on many different shapes and sizes which is dependent on the location, ground water occurrence and temperature.  Calcite is usually white or colorless but can be gray, red, yellow, green, blue, violet, brown or black.  The deeper the color is usually indicative of the definitive impurities from the earth or water.

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Coni Calcite

$40.00 M704b  This is an interesting mineral!  Here is really neat Green Tourmaline crystals in a Smokey Quartz matrix from Brazil.  It has pretty Green Tourmaline crystals with other scattered Tourmaline in a couple spots.   The longest Green Tourmaline crystal is almost 1" long.  This rare mineral specimen measures 3 5/8" x almost 1 7/8" x 1 1/2" and has a super appearance. Very neat!

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The Tourmaline mineral group is chemically one of the most complicated groups of Silicate minerals.  Its composition varies widely with Sodium, Calcium, Iron, Magnesium, Lithium, Aluminum, Boron and other elements.  It has a wide variety of colors including black, blue-black, brown, yellow, red, green, pink and is rarely colorless.  This mineral is found in igneous rocks, like Granite Pegmatite, and metamorphic rocks such as Schist and Marble.

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Green Tourmaline

$25.00 M716c  This is an interesting mineral!  Here is a nice Azurite and Malachite specimen from Morocco.  This cool mineral measures 3 3/4" x nearly 2 3/4" x 1 3/8" and has a nice natural appearance. This specimen has various shades of pretty colors ranging from bright aqua Blue to rich Green over an earth tone matrix.  A very unique specimen!

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Azurite is a mineral belonging to the Carbonate group of minerals. It is commonly found with Malachite, Goethite and Calcite. It is typically associated with Copper deposits including Limestone which is the source of the Carbonate.

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Azurite - Malachite

$15.00 M705c  Tourmaline from the Black Hills of South Dakota!!  There are many, many small specimens of Black Tourmaline crystals resting in a Quartz rock matrix.  The mineral measures nearly 4" x 3" x 2 1/2" and has not been polished.  Very interesting and different.

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Tourmaline and the Tourmaline mineral group is chemically one of the most complicated groups of Silicate minerals.  Its composition varies widely with Sodium, Calcium, Iron, Magnesium, Lithium, Aluminum, Boron and other elements.  It has a wide variety of colors including black, blue-black, brown, yellow, red, green, pink and is rarely colorless.  This mineral is found in igneous rocks, like Granite Pegmatite, and metamorphic rocks such as Schist and Marble.

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Tourmaline in Quartz

$30.00 M706c    This is an interesting mineral combination!  Here is a lovely Mica and Quartz specimen with Tourmaline from the central Black Hills of South Dakota.  This fantastic shiny mineral measures 5 1/8" x 4 3/4" x 4"; weighs 3 pounds and has a super sparkly appearance where the Mica is.  There are soft Black Tourmaline crystals scattered about with the shiny thin layers of Mica and the quartz matrix rock.  Very different and beautiful!!

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The Mica group of silicate minerals included several closely related materials with nearly perfect basal cleavage.  That most prominent characteristic is explained by the hexagonal arrangement of it's atoms.  It's name is derived from the Latin word Mica and likely influenced by Micare, to shine or glitter.   Mica is invaluable in the electrical industry because of it's unique physical, chemical and thermal properties, low power loss factor, dielectric constant and dielectric strength. 

The Tourmaline mineral group is chemically one of the most complicated groups of Silicate minerals.  Its composition varies widely with Sodium, Calcium, Iron, Magnesium, Lithium, Aluminum, Boron and other elements.  It has a wide variety of colors including black, blue-black, brown, yellow, red, green, pink and is rarely colorless.  This mineral is found in igneous rocks, like Granite Pegmatite, and metamorphic rocks such as Schist and Marble.

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Mica - Tourmaline

$35.00 M707c  This is rare and unique item; an absolutely gorgeous Aqua Aura specimen from Brazil.  This very interesting specimen has a gleaming iridescence on the pale Aqua crystals from every angle.  It measures 2 1/8" x 1 3/4" x almost 2 1/4" and has an excellent sparkly appearance.  A very, very beautiful and cool specimen of nature and man at it's finest!

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Aqua Aura is a metallic light blue tint on Clear Quartz from an electrical infusion of gold powder.  They are created by a special process treating the natural Quartz crystals with vaporized, finely powdered pure gold.   This results in a stunning iridescent rainbow flash on the brilliant blue crystals.  Aqua Aura is said to have many positive effects in the metaphysical world. 

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Aqua Aura

$20.00 M710c   Here is an above average quality specimen of of Rubellite or Pink Tourmaline from Brazil.  The fantastic mineral measures nearly 5 1/2" x almost 2" x over 1" and has a natural sparkly appearance.  It has many deep Pink colored crystals in an unique pattern.  Very nice!

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Rubellite is a particularly beautiful and colorful gemstone from Tourmaline family. The Tourmaline mineral group is chemically one of the most complicated groups of Silicate minerals.  Its composition varies widely with Sodium, Calcium, Iron, Magnesium, Lithium, Aluminum, Boron and other elements.  It has a wide variety of colors including black, blue-black, brown, yellow, red, green, pink and is rarely colorless.  This mineral is found in igneous rocks, like Granite Pegmatite, and metamorphic rocks such as Schist and Marble.

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Rubellite

$85.00 M709c  This is a nice Barite and Calcite specimen.  This cluster has a very well defined Golden Barite Crystal points with another much smaller one along side on a Yellow Calcite bed all on a limestone matrix.  The large Barite Crystal is over 2 3/8" long.  The entire specimen measures almost 2 3/4" x 1 3/4" x nearly 2 1/2" and has a nice natural appearance.  This specimen is from Butte County of South Dakota. 

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Barite is a mineral consisting of Barium sulfate and is generally white or colorless.  It is used in the manufacture of paints and paper.  Although Barite contains a 'heavy' metal, Barium, it is not considered to be a toxic chemical because of its extreme insolubility.

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Barite - Calcite

$85.00 M720b  This is a very nice Epidote specimen from Peru.  This amazing Epidote cluster has very well defined dark green columnar prism crystals of different sizes, all going different directions from the unidentified tan colored matrix.   The entire lovely specimen measures 3 1/8" x 3 1/4" x nearly 2 3/4" and has a nice natural sparkly appearance. 

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Epidote is an abundant rock-forming mineral, but one of the secondary origin. Many of the characters of the mineral vary with the amount of iron present. Prismatic, columnar crystals, often shiny, finely striated faces. The color is green, gray, brown or nearly black but usually a characteristic shade of yellowish-green or pistachio green.

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Epidote

$35.00 M717c  This is an extremely nice, well formed Creedite crystal floater cluster from Chihuahua, Mexico.  This rarer mineral has an interesting acicular radiating spray of fine Burnt Orange prisms with lots of character.  It measures 5 3/8" x 3" x 2" and has a natural texture and finish.  Just an outstanding specimen of something different!

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 Creedite is a rare hydroxylhalide mineral that formed from the oxidation of fluorite ore deposits. It ranges in color from colorless, white, violet to orange. Creedite gets it's name from Creede Quadrangle Colorado where it was first found 1916. It was later also found in Nevada, California and Chihuahua, Mexico. Other world locations are in Eastern Europe in Tajikistan and Kazakhstan.

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Creedite

$32.00 M711b   Here is a very nice, very interesting specimen of Calcite from Morocco.  It measures almost 5 1/2" x nearly 3 1/2" x 1 7/8" and has a deep Teal Green, Orange Gold, Sparkly White and shiny Grey mix of colors.  Most of the specimen is Calcite which shows the majority of the unique colors originate.  Some of the Calcite Crystals have been slightly broken or damaged but do not distract from the overall beauty of the mineral.

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Calcite is a Carbonate mineral that is most widely distributed on the Earth's surface.  It is a common constituent of sedimentary rocks with Limestone in particular.  A Calcite formation can take on many different shapes and sizes which is dependent on the location, ground water occurrence and temperature.  Calcite is usually white or colorless but can be gray, red, yellow, green, blue, violet, brown or black.  The deeper the color is usually indicative of the definitive impurities from the earth or water.

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Calcite

$200.00

M712vc  Here is an awesome specimen of Azurite from Mexico.  It has a pretty dark blue color that sparkles from every direction as the light hits it.  It measures 2" long x over 1 1/8" x nearly 1 1/4" and has a natural texture and finish.  This fantastic material doesn't photograph well to properly show it's character but makes a excellent addition to any collection.

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Azurite is a mineral belonging to the Carbonate group of minerals. It is commonly found with Malachite, Goethite and Calcite. It is typically associated with Copper deposits including Limestone which is the source of the Carbonate.

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Azurite

$25.00

M719c  Here is a new item; a very nice, beautiful quality Danburite specimen from Mexico.  It measures nearly 1 5/8" x 1" x 5/8" and has a natural very shiny appearance with excellent clarity and sparkly inclusions.   Very, very nice!

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Danburite, is a relatively new gemstone discovered in 1839 in Danbury, Connecticut.  The original deposit is now buried under the city of Danbury. With a hardness of 7, Danburite is quite hard and suitable for any kind of jewelry.  Because of its high refractive index, well cut Danburites are remarkably bright and can look something like diamonds.  Today, most of the colorless Danburite comes from Mexico.  It makes an especially brilliant gem because of its extreme clarity.

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Danburite

$20.00

M714b  Here is a very nice specimen of Fluorite from Qinglong in the Guizhou Province of China.  It has nice Purple, White and Green colors mixed with the creamy Barite crystals.  The creamy Barite crystals cover a good portion of this specimen providing a character all it's own.  It measures 3 3/8" x 2 3/8" x almost 1 5/8".  This cool specimen is a beautiful work of nature.

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Fluorite, also referred to as fluor-spar, is a mineral composed of Calcium Fluoride.  It is a widely occurring mineral found world wide and is often found with metallic minerals such as Galena, Sphalerite, Barite, Quartz and Calcite.  Fluorite may fluoresce strongly in ultraviolet light which may be due to the presence of some impurities such as Yttrium.  Blue is the most common color but red, purple, green, yellow and white are also frequent.  It can be used in high performance telescopes, camera lens, enamels and in the making of opalescent glass.

Barite is a mineral consisting of Barium sulfate and is generally white or colorless.  It is used in the manufacture of paints and paper.  Although Barite contains a 'heavy' metal, Barium, it is not considered to be a toxic chemical because of its extreme insolubility.

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Fluorite - Barite

$35.00

M718b  Here is a very cool specimen of Chalcedony from the Jalagon district in India.  This lovely specimen has gorgeous sparkly White Chalcedony crystals emerging from a Bluish Gray background matrix.  It measures 4" x almost 3 5/8" x 2 3/4".  This interesting specimen is a beautiful work of nature.

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Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of the minerals quartz and moganite. Chalcedony has a waxy luster, and may be semitransparent or translucent. It can assume a wide range of colors, but those most commonly seen are white to gray, grayish-blue or a shade of brown ranging from pale to nearly black.

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Chalcedony

$45.00

M715b  Here is an impressive specimen of  Natural Copper and Cuprite on matrix from the Milpillas Mine in Sonara, Mexico.  This mine is no longer open to mineral collectors.  The natural copper covers different areas of this specimen. There is also Cuprite mixed in this piece.  It measures nearly 3" x 2 3/8" x over 1 5/8".  This interesting specimen is a lovely work of nature.

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Copper is a reddish colored metal with a high electrical and thermal conductivity.  It has its characteristic color because it reflects red and orange light and absorbs other frequencies in the visible spectrum due to its band structure.  It is in the same family as Silver and Gold and is a malleable metal.  It is beautiful natural or polished.

Cuprite is a secondary mineral which forms in the oxidized zone of copper sulfide deposits. It frequently occurs in association with native copper, azurite, chrysocolla, malachite, tenorite and a variety of iron oxide minerals.  It frequently forms as an encrusting reddish coating over Copper.  Cuprite was first described in 1845 and the name derives from the Latin cuprum for its copper content.

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Natural Copper - Cuprite

$14.00

M713c  Here is a neat Dugway Geode specimen from an unknown location in Utah.  It has a very cool cavity and measures 3" x 3" x 1 5/8".  It has a lovely pale grey colored Quartz inside the sparkly crystal cavity that fluoresces a cool green color short wave UV light.  The face of of the cavity has been polished.  This specimen is a beautiful work of nature.

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Geodes are geological rock formations which occur in sedimentary and certain volcanic rocks.  They are essentially rock cavities or vugs with internal Crystal formations or concentric banding.  The exterior is generally Limestone while the interior contains Quartz Crystals and/or Chalcedony deposits.  If the Geode is completely filled with Crystal, being solid all the way through, it is then called a nodule.

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Dugway Geode

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