Mineral Gallery
by The Rock Shed

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Minerals

Item Description          Click Any Picture for Larger Image

mineral

$100.00

 

GAL912c  GOLDEN BARITE with YELLOW CALCITE 

 Here is an absolutely cool "one of kind" item, a fabulous Honey Gold Barite and Yellow Calcite specimen.  The large Barite crystal has an excellent "root beer" or dark honey color and nice clarity.  The superb Barite crystal is 2 1/8" long x almost 7/8" wide.  It has a glassy luster and a mostly intact point.  The bright Yellow Calcite bed has numerous tiny crystals emerging from the limestone matrix.   The entire specimen measures 1 5/8" x 2 5/8" x nearly 2" and has a nice natural appearance.  This gorgeous specimen is from the Elk Creek area of Meade County in South Dakota.  The awesome specimen is mounted in a plastic display box that measures 3" x 3" x 3" and weighs over 1/4 pound.  A truly unique and incomparable Golden Barite and Yellow Calcite specimen!         

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Barite or Baryte is a mineral consisting of Barium sulfate and is generally white or colorless. The baryte group consists of baryte, celestine, anglesite and anhydrite. Baryte commonly occurs in lead-zinc veins in limestones, in hot spring deposits, and with hematite ore. 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.

 

mineral

$600.00

 

GAL913b  WULFENITE 

 This is a breathtaking, extra large Wulfenite specimen from Mapimi, Durango in Mexico. This exceptional piece has countless Yellow Wulfenite crystals of different sizes and shapes poking out in all directions from the dark green and rust colored matrix.  No matter from what angle you look at it, it's just plain gorgeous.  The beautiful specimen measures approximately 10" x 9" x nearly 4 1/4" and weighs almost 8 pounds. Well beyond any doubt, this is an awesome specimen of Wulfenite!     

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Wulfenite is a lead molybdate mineral named for an Austrian mineralogist. It is most often found as stubby, pryamidal or tabular crystals in a bright orange-red to yellow-orange color. It is found in many locations, associated with lead ores as a secondary mineral and often found with Cerussite, Smithsonite, Hemimorphite, Vanadinite, Mimetite and other minerals. Among the more notable locations for finding Wulfenite are Pennsylvania, Arizona and Mexico.    

 

mineral

$900.00

 

GAL914b  AQUAMARINE - FLUORITE - MUSCOVITE MICA

Here is a fantastic example of a spectacular quality Aquamarine on a Muscovite Mica matrix from Nagar, Pakistan.  This unique and absolutely gorgeous specimen has several superb Aquamarine crystals of different sizes on a bed of platy Muscovite Mica crystals with some Pink Fluorite to add to the already unmatched character.  The beautiful blue Aquamarine crystals are outstanding hexagonal prisms with flat termination and excellent clarity.  The lovely Pink Fluorite measures 1 3/8" x 3/4" wide and together with the Aquamarine and Muscovite Mica measures nearly 6" x 4 1/4" x 2 1/2"; weighs over 2 1/2 pounds and has not been polished.  Just absolutely incredible!!
 

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Aquamarine (from Latin: aqua marina, "water of the sea") is a blue or cyan variety of beryl.  It occurs at most localities which yield ordinary beryl.  Beryl is a mineral composed of beryllium aluminium cyclosilicate.  The pale blue color of aquamarine is attributed to Fe2+ (or iron).  The Fe3+ ions produce golden-yellow color, and when both Fe2+ and Fe3+ are present, the color is a darker blue as in maxixe.  In the United States, aquamarines can be found in the Sawatch Range in central Colorado and in the Big Horn Mountains of Wyoming.

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.

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.

 

mineral

$750.00

 

GAL915B  RUTILATED SMOKEY QUARTZ   

This is an exceptional example of a Rutilated Smokey Quartz Crystal from Brazil.  It has a deep "Smokey" color with amazing clarity showing the gorgeous Gold colored Rutiles. This specimen is not only loaded with Rutiles but also has fabulous inclusions and dazzling "rainbow" reflections.  The multi-faceted crystal is all natural with a very nice finish.  Like most Quartz, pictures just don't do it proper justice!  This gorgeous larger crystal measures 13 3/8" long x 8 1/2" x 7 1/8" and weighs nearly 21 1/4 pounds. This incredible specimen is unmatched from whatever direction you choose to view it.

Even though pictures cannot do this exceptional piece justice, be sure to look at all of them - click on each picture below to see the full size version. Just an absolutely beautiful item. 

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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.

Rutile is a mineral composed primarily of Titanium Dioxide. Rutile has among the highest refractive indices of any known mineral and also exhibits high dispersion. Rutile is known to contain up to 10% Iron as well as significant amounts of Niobium and Tantalum. Rutile creates small needles within crystals that can be seen when held up to light.

 

mineral

$300.00

 

GAL916C  AQUAMARINE - MUSCOVITE MICA   

Here is an exceptional example of a spectacular quality Aquamarine on a Muscovite Mica matrix from Nagar, Pakistan.  This unique and absolutely gorgeous specimen has several superb Aquamarine crystals of different sizes on a bed of platy Muscovite Mica The beautiful blue Aquamarine crystals are outstanding hexagonal prisms with flat termination and excellent clarity. It measures 4" x 3 3/8" x 2 1/2",and has not been polished.  Just absolutely incredible!!
 
 

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Aquamarine (from Latin: aqua marina, "water of the sea") is a blue or cyan variety of beryl.  It occurs at most localities which yield ordinary beryl.  Beryl is a mineral composed of beryllium aluminium cyclosilicate.  The pale blue color of aquamarine is attributed to Fe2+ (or iron).  The Fe3+ ions produce golden-yellow color, and when both Fe2+ and Fe3+ are present, the color is a darker blue as in maxixe.  In the United States, aquamarines can be found in the Sawatch Range in central Colorado and in the Big Horn Mountains of Wyoming.
 

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.

mineral

$400.00

 

GAL917C  GARNET  

Here's a fabulous large piece of Garnet from India. It measures  4 1/8" x 3 7/8" x 4 14"and weighs nearly 6 pounds.  It has a great polish, lots of sparkle and great color. It has several flat bottoms so it sits nicely for display. A truly amazing item as we don't usually see a Ganet this large!
 

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Garnet is included in a group of minerals that have been used since the Bronze Age as gemstones and abrasives. Garnets are most often as seen in red, but are available in a wide variety of colors spanning the entire color spectrum except blue. There are six common species of Garnet that are recognized by their chemical composition: Pyrope, Almandine, Spessartite, Grossular, which includes Hessonite and Tsavorite, Uvarovite and Andradite.
 

mineral

$135.00

 

GAL918C  PYRITE  

Here is an impressive and gorgeous specimen of  Pyrite from Peru. The lovely piece has splendid Pyrite cubes and  different shapes and sizes covering the entire specimen with gorgeous Calcite crystals giving it an extra touch of class. Look at the different views of this spectacular specimen to see the very cool Pyrite by clicking each picture for a full sized version. It measures 5 1/2" x 4 5/8" x 2 1/2" and weighs nearly 4 1/4 pounds.  The unsurpassed example has lots of personality with distinctive natural beauty!
 

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Pyrite, or Iron Pyrite, is an Iron sulfide with isometric Crystals that usually appear as cubes.  It is brittle and can break or powder easily.  Its metallic luster and brass yellow hue have earned it the nickname of "fool's gold" due to many miners mistaken it for the real thing.  Ironically, small quantities of actual gold are sometimes found in Pyrite.  It is the most common of the sulfide minerals and is usually found with other sulfides or oxides in Quartz veins, sedimentary or metamorphic rocks. 

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.

mineral

$500.00

 

GAL919c  AZURITE  

Here is a striking and astonishing piece of Azurite from Morocco.  The spectacular example has different shades of dark Blue crystals covering nearly the entire specimen.  Although the pictures don't do it proper justice,  look at the different views of this remarkable specimen to see the Blue Azurite by clicking each picture for a full sized version.  The exceptional Azurite specimen measures 3 7/8" x nearly 2 1/2" x 2 1/8" and weighs almost 10 ounces.  The fabulous example has lots of personality with distinctive natural beauty!
 

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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.
 

mineral

$300.00

 

GAL920C  FLUORITE  

Here is an impressive piece of Fluorite from Brazil. It has a fabulous emerald green color with lots of small cubes of Chalcopyrite and is not polished.  All the different views show the exceptional and distinctive personality from every angle. This outstanding specimen measures 5 7/8" x 4 1/4" x 3" and weighs nearly 3 3/4 pounds. The wondrous example has lots of charisma with distinctive natural charm.
 

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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.

Chalcopyrite is a copper iron sulfide mineral that crystallizes in the tetragonal system. Chalcopyrite has a brassy to golden yellow color, which often resembles Gold. However, its physical properties such as streak and tenacity are very different from Gold and can easily distinguish it. Chalcopyrite is a beautiful mineral, with good crystals being fairly common. Chalcopyrite is rarely found in association with native copper.

mineral

$700.00

 

GAL921b  ARAGONITE  

Here is an incredible and quite large specimen of Aragonite or sometimes called "Cave Calcite" from Morocco.  The absolutely spectacular example has different shapes of lovely white crystals covering the entire piece.  All the different views show the unmatched character and personality from every angle.  The phenomenal Aragonite specimen measures approximately 16" x nearly 11" x 8 1/2" tall and weighs almost 40 pounds.  This extraordinary Aragaonite example has lots of charisma with distinctive and unmatched natural beauty!
 

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Aragonite is a Carbonate mineral that can occur in conjunction with Calcium Carbonates.  Aragonite differs from Calcite in the formation of the Crystal shapes which can be in lattice, crystal, columnar or fibrous in many different designs, shapes and sizes.  Aragonite will form in mollusk shells, oceans and salt water caves as inorganic precipitates called marine cements and speleotherms.  Ammolite is a form of Aragonite with impurities that make it iridescent and valuable as a gemstone.

 

mineral

$250.00

 

GAL922B  CHALCOPYRITE  

Here is an absolutely gorgeous specimen of Chalcopyrite from China. This exceptional piece has lots of "sparkle" and great design.  All the different views below show the unmatched character and personality from every angle.  The exceptional Chalcopyrite measures 4 1/2" x 4" x 3 1/8"  and weighs nearly 6 pounds.  This extraordinary specimen has tons of charisma with distinctive and unmatched natural beauty! A wonderful addition to any serious collection!
 

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Chalcopyrite is a copper iron sulfide mineral that crystallizes in the tetragonal system. Chalcopyrite has a brassy to golden yellow color, which often resembles Gold. However, its physical properties such as streak and tenacity are very different from Gold and can easily distinguish it. Chalcopyrite is a beautiful mineral, with good crystals being fairly common. Chalcopyrite is rarely found in association with native copper.

mineral

$300.00

 

GAL923B  LANDSCAPE QUARTZ

Here is an amazing piece of Lodalite or Landscape Quartz from Brazil. It has a fabulous polish that allows you to look in and marvel at the 3-D like display of the gorgeous inclusions that resembles a cool Landscape. It has exceptional clarity and even some "rainbow" reflections.  It measures 4" x 3 3/8" x 5 3/4". Very beautiful indeed.
 

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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.

Lodalite is a type of quartz, with indeterminate minerals. It is also known as Garden or Shaman Quartz when cut and polished. The included minerals within lunar landscape. Lodalite Quartz offer a window into another world.

mineral

$400.00

 

GAL924C  FLUORITE

Here is an excellent example of top quality Fluorite crystals on Druzy Quartz  from China. This brilliant specimen has gorgeous purple Fluorite crystals set against the sparkly gray and white Druzy Quartz. It has been cut so is able to be displayed in upright position. It  measures 7 1/2" x 5 3/8" x 2 7/8", weighs nearly 7 pounds and has not been polished. Absolutely stunning!!!
 

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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.

mineral

$600.00

 

GAL925C  VANADANITE

Here is an exceptional specimen of Vanadinite on matrix. This unique piece has sparkly Red and burnt Orange colored hexagonal Vanadinite crystals.  It measures 6 5/8" x 4 3/8" x 1 7/8" and weighs over 2 1/2 pounds. This is an astonishing work of nature and very fragile. This mineral is from Morocco.
 

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Vanadinite is a mineral belonging to the Apatite group of Phosphate minerals. It is one of the main industrial Ores of the metal Vanadium and a minor source of Lead. Vanadinite is relatively uncommon and is associated with Galena, Wulfenite, Limonite and Barite. It is usually bright red or orange-red in color although it may sometimes be brown, red-brown, grey, yellow or colorless.

mineral

$150.00

 

GAL926B  GRAPE CHALCEDONY

 This is a lovely specimen of  Purple or Grape Chalcedony from the Mamuju area of Sulawesi Barat Province of Indonesia.  The bubbly or botryoidal cluster of tiny purple grapes is also known as Manakarra Stone or Grape Agate.  It has numerous pretty purple colored "grapes" with lighter ones in different areas and is all natural.  The beautiful Grape Chalcedony measures 6 3/8" x  3 3/4" x  2 1/4".  Simply amazing!
 

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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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