Minerals from Different Locations

Page 5  Go To Page:  [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 6 ] [ 7 ] [ 8 

McAfee Secure sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams

Cost

Item Description

Click Picture
for Larger Image


$75.00 M500c  This is a beautiful light blue specimen of Celestite.  It measures 5 5/8" x 4 1/2" x  2 5/8" and has not been polished.  This Celestite specimen has many, many very nicely defined and sparkly crystals. The pictures don't really do it justice. This piece is awesome.

Another photo

Celestite is a mineral form of Strontium Sulfate which is a metal.  The metal is mixed with Carbon and Sulfur which is used for the red "fire" in fireworks, flares and road signals.  Celestite occurs as Crystals and in compact massive and fibrous forms.  It is mostly found in sedimentary rocks and is often associated with Gypsum, Anhydrite and Halite.  Pale blue Crystal specimens are found in Madagascar. 

crystal calcite

Celestite

$10.00 M501b  Here is something different for the mineral collector.  This is a nice specimen of Wavellite on matrix and is from Arkansas.  This interesting mineral measures 2 5/8" x almost 1 3/4" x 1" and has a pale green color.  A really different mineral for the mineral collector.

Another photo

Another photo

Chemically, Wavellite is Hydrated Aluminum Phosphate Hydroxide.  It is a secondary mineral found most often in aluminous, low-grade metamorphic rocks.  Normally it forms as radiating "starburst" clusters of green to yellow-green crystals.  It will show its fibrous structure on fracture surfaces in the matrix.

wavellite

Wavellite

$50.00 M502b  This is something different for the rock collector.  Here is a excellent example of Dogtooth Calcite.  It has very nice dark tan to dusty rose colored scalenohedral or "dogtooth" calcite crystals emerging from the matrix pointing in all different directions.  Much of the Dogtooth Calcite specimen is covered with a frosty and sparkly coating that appears like ice or snow.  The lovely specimen measures almost 5 1/2" x 3 1/2" x nearly 3".  A true wonder of nature.

Another photo 

Another photo

Another photo

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

Dogtooth Calcite

$50.00

M503b  Here is a very nice combination specimen of Wulfenite and Mimetite from Durango, Mexico.  This exceptional piece has many small Yellow Wulfenite crystals of different sizes and shapes poking out in all directions from the pretty green Mimetite and rust colored matrix.  The unique mineral measures nearly 3 1/2" x 2 1/2" x nearly 2 1/4" and has a natural appearance.  Definitely something different to start a mineral collection.

Another photo   Closer view

Another photo

Another photo

Another photo

Mimetite is an Arsenic mineral often associated with Lead, Galena, Vanadinite, Wulfenite, Calcite and Arsenopyrite.  It resembles Pyromorphite as it falls in the same series of minerals as Pyromorphite and Vanadinite.  Mimetite is known as a collector's specimen often creating botryoidal crusts on the the surface of the specimen.  It is not used as a gemstone due to its softness.

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

Mimetite - Wulfenite

$30.00 M504b  Here is a very nice, above average quality Crystal Quartz cluster specimen from Brazil.  This very neat Crystal cluster with multiple points and other Crystal tabs attached; measures 4 5/8" x 3 7/8" x almost 2".  It has good clarity in the sparkly crystals points and some cool inclusions that only add to the wonderful character.  The beautiful and sparkly Crystal Quartz cluster displays very well with minor dings in a few tips;  defects reflected in our price.  A beautiful addition to any Crystal collection.

Another photo  

Another photo

Another photo

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.

mineral

Crystal Quartz

$80.00

M505c  Here is an interesting find.  This is a very nice specimen of Stibnite from Romania.  It has sparkly Grey metallic colored crystals going in all directions and an unique appearance.  The specimen measures 4 3/8" x nearly 3 5/8" x 2" and makes for an interesting display of an unusual mineral.

Another photo

Another photo

Another photo

Stibnite, also known as Antimonite, is a Sulfide mineral that forms grey Crystals.  It is the most important source for the rare Metalloid Antimony.  It is used in the manufacture of fireworks, batteries, safety matches and mascara.

mineral

Stibnite

$24.00 M506c   This is something different for the mineral collector.  Here is a very nice section of a Purple Amethyst Geode.  The beautiful specimen measures nearly 4 1/4" x almost 2 3/4" x over 1 1/2" and has a natural sparkly appearance.  This lovely piece has an array of gorgeous Purple Crystals that do have minor damage to some of the tips and reflected in our price.  It makes a beautiful display for any area of your home or office.

Another photo 

Another photo

Another photo

Amethyst is a purple variety of Quartz often used as an ornament.  Upon exposure to heat, Amethyst generally becomes yellow, which some refer to as Citrine or "burnt" Amethyst.  It occurs in color from a light, slightly pinkish violet to a deep grape purple.  It is widely distributed as a mineral.

mineral

Amethyst

$25.00 M507c   Here is a very nice, above average quality Quartz and Tourmaline specimen from Brazil.  It measures 4 1/2" x 4 1/8" x almost 3 5/8"; weighs over 3 lbs and has a natural shiny appearance.  The Tourmaline Crystals are scattered about and have a nice natural Black color.  There is lots of character when the light hits it from every direction.  Very nice!

Another photo

Another photo

Another photo

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.

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.

mineral

Quartz - Tourmaline

$18.00 M508c  This is a very cool and interesting piece of Stilbite from India.  It has nice clusters of light Peach colored sheaves of Stilbite crystals on matrix.  The eye-catching specimen measures nearly 5 1/2" x almost 3" x over 2" tall with a very nice appearance.   A unique mineral with lots of character.

Another photo

Another photo

Another photo

Stilbite is another Silicate mineral from the Zeolite family.  It is often characterized by its sheaf like aggregates.  The color is usually white or pink and when the cleavage is perfect, will have a distinct pearly luster.

mineral

Stilbite

$30.00 M509c   Here is a very nice specimen of Wulfenite and Mimetite from Mapimi in Mexico.  It measures almost 3 1/8" x nearly 2 1/2" x over 1 3/4" and has a natural sparkly shine on the crystals.  This specimen has numerous pristine Yellow crystals along with dark Green Mimetite emerging from a brown and rust colored matrix. This mineral is quite fragile and would make a fantastic addition to your collection!

Another photo Close-up view

Another photo

Another photo

Another photo

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 Cerussite, Smithsonite, Hemimorphite, Vanadinite, Mimetite and other minerals. Among the more notable locations for finding Wulfenite are Pennsylvania, Arizona and Mexico.    

Mimetite is an Arsenic mineral often associated with Lead, Galena, Vanadinite, Wulfenite, Calcite and Arsenopyrite.  It resembles Pyromorphite as it falls in the same series of minerals as Pyromorphite and Vanadinite.  Mimetite is known as a collector's specimen often creating botryoidal crusts on the the surface of the specimen.  It is not used as a gemstone due to its softness.

wulfenite

Wulfenite - Mimetite

$35.00 M510c  Here is something very different for the mineral collector.  This is an awesome piece of Fluorite from Qinglong in the Guizhou Province of China. It has nice Purple colors mixed with the creamy White Barite crystals. This unique and very pretty specimen measures nearly 4 1/2" x 3 1/8" x over 1".  A really neat addition to any mineral collection.

Another photo

Another photo

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.

fluorite

Fluorite

$15.00

M511b   Here is a very nice Citrine Crystal specimen from Brazil.  This unique specimen measures 3 5/8" x over 2 1/2" x 2 1/8" tall and has sparkly Honey Gold colored crystals.   These true beauties were part of larger Geodes that were broken down to show the inner Crystals.

Another photo 

Another photo

Another photo

Citrine is any Quartz Crystal or cluster that is yellow or orange in color.  Most Citrine, usually begins as Amethyst which becomes yellow due to heat treatments.  True Citrine is often rarer but is hard to distinguish from the heat treated variety.  It is widely distributed as a mineral, but fine, clear specimens that are suitable for cutting as ornamental stones.

mineral

Citrine
 


$80.00

M512b  This is a very nice colorful specimen of Aragonite from Wen Shan, Yunan, China.  It has a pretty pale Green color with an interesting plush fuzzy looking texture.  It measures 3 1/4" x 1 3/8" x 1 1/8" and is quite fragile.  This is a beautiful work of nature. 

Another photo

Another photo

Another photo

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

Aragonite

$28.00 M513b  Here is a gorgeous combination specimen of Azurite and Malachite from Morocco.   This lovely mineral specimen has beautiful Azurite colors of Dark Blue accented by various greens of Malachite in different places.  It measures 2 3/8" x nearly 1 3/4" x 1 5/8" with a natural texture and finish.   Azurite can be difficult to photograph and the pictures don't do this awesome specimen justice!

Another photo 

Another photo

Another photo

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.

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.

mineral

Azurite Malachite


$5.00

M514c  This is a new and different item at the Rock Shed.  This is an interesting Garnet in matrix specimen from Brazil.  The unique piece has pretty dark red colored garnets emerging from the brown matrix.  The exposed garnet is nearly 5/8" x over 3/8" in a matrix that measures 2 1/8" x 1 3/8" x 1".   Very cool! 

Another photo

Another photo

Another photo

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

Garnet in Matrix


$80.00 M515c  This is a beautiful piece of Blue Kyanite and White Quartz from Brazil.  This very nice specimen measures almost 6 3/4" x nearly 3 3/4" x 3 1/8" and has a very pretty shaded Blue color.  This specimen has lots of clear to white Quartz embedded in the Blue Kyanite giving the appearance an extra sparkle and shine for extra character.  This beauty is fragile and awesome work of nature.

Another photo

Another photo

Another photo

Another photo

Kyanite is a typically blue Silicate mineral that is commonly found in Aluminum rich metamorphic pegmatites and/or sedimentary rock.  It is used primarily in refractory and ceramic products including porcelain plumbing fixtures and dinnerware.  It is also used in electrical insulators and abrasives.  It is definitely a collector's mineral.

mineral

Kyanite-Quartz


$20.00 M516b  Here is a beautiful mineral specimen of Apophyllite with Stilbite from Ahmednagar, India.  This lovely mineral has pretty sparkly clear to pale green Apophyllite Crystals with a few light peach colored Stilbite scattered about.  Close inspection shows some Scolecite crystals mixed in.  It measures nearly 5 3/8" x almost 3" x 2 1/4" and has an interesting multi-textured appearance.  Very Cool!

Another photo

Another photo

Another photo

Apophyllite, also a Zeolite,  is Silicate mineral with very well defined clear Crystals and is very popular as a collector's mineral.  The Crystal structure will refract like in obvious rainbows and can form "natural pyramids" when tumbled.

Stilbite is another Silicate mineral from the Zeolite family. It is often characterized by its sheaf like aggregates. The color is usually white or pink and when the cleavage is perfect, will have a distinct pearly luster.

mineral

Apophyllite Stilbite

$45.00 M518b  This is a very nice Barite crystal with Yellow Calcite specimen from South Dakota.  This piece has very well defined 1 3/4" long Honey Barite Crystal on a bed of Yellow Calcite crystals all on matrix.  It measures 1 3/4" x 1 1/2" x nearly 1 1/2" and has a nice natural appearance.  This specimen is from Meade County of South Dakota. 

Another photo 

Another photo

Another photo

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.

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

South Dakota Barite

$75.00

M519c   Here is a exceptionally nice Green Tourmaline in Albite Matrix from Brazil.   It has lots and lots of smaller sparkly dark Green colored crystals mostly in one area.   This very interesting and pretty specimen measures 5" x nearly 3 3/4" x almost 3".  Very, very nice.

Another photo   Closer view

Another photo

Another photo

Another photo

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.

mineral

Green Tourmaline
 

$60.00

M520c   Here is a exceptionally nice Green Ghost Phantom Quartz cluster from China.   This beautiful Chromium Green Quartz cluster is lab grown by adding Chromium to create the green beauty here.  It has lots of sparkly Quartz crystals of different sizes pointing in all directions.  The darker green crystal tips only add to the wonderful character of this item.  It measures 3 7/8" x almost 3 1/8" x 3 7/8".  Just a gorgeous piece!!

Another photo 

Another photo

Another photo

Another photo

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.

mineral

Chromium Phantom Quartz
 

$30.00

M521c  Here is something new and different; an excellent example of an Amphibole Quartz Crystal from Bahia, Brazil.  The Amphibole Quartz has amazing clarity showing the wonderful inclusions of Limonite (yellow), Hematite (red), Kaolinite (white) or Lithium (pink).  This fascinating Quartz crystal is nearly 3" x over 1 3/4" x 5/8" thick with excellent colorful inclusions.  The multi-faceted crystal is all natural with a very nice finish.  Like most Quartz Crystals, pictures just don't do it proper justice! 

Another photo

Another photo

Another photo

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.

mineral

Amphibole Quartz

I'm on Page 5
Go to Page:
  [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 6 ] [ 7 ] [ 8 ]

Ordering information and instructions

The Rock Shed
515 1st Street
Keystone, SD  57751

Hours: Monday - Saturday 9:00 AM to 6:00 PM
 Toll Free Order Line:  1-866-354-0894
 Information:  605-666-4813
email:  info@therockshed.com

Home
 Long Gemstone Beads Short Beads I Amber & Necklaces I Bracelets I Earrings I Sterling Pendants
Rosaries I Fossils I Copal I Polished Rock
I Educational Kits I Bookends I Gold Specimens I Gallery
Hearts I Septarians I Spheres I Eggs I Minerals I Gemstone Lights I Books I Plastic Stands I Brass Stands
Rock Tumbler Page I Grit and Accessories I Tumbling Rock I Rough Rock I Landscape Rock
Lapidary Grinders I Lapidary Saws I Diamond Blades Agates I Findings I Clearance
Shipping Information I History I Auctions
I Pictures I Links