Special Mineral Gallery
(Friend's Private Collection)

Due to health reasons, one of our friends must sell his collection of many years.  Below is some of his finer rare minerals, fossils and rocks.

Page 1  Go To Page: [ 2 ]

Minerals

Item Description          Click Any Picture for Larger Image

mineral
 

$240.00

  

GALv100b  FOSSIL CORAL FLORIDA    

This is an absolutely gorgeous geode pair of  fossilized Florida Coral.  Both halves have a great polish on the cut edge and has a beautiful natural interior as can be seen from the pictures.   Each half measures approximately 6" x 3 1/2" x 3 plus inches in depth and the combined pair weighs nearly 2 1/4 lbs.  This stunningly beautiful specimen is an awesome work of nature, it is rare and will make a great conversation piece.

  mineral  mineral  mineral  mineral

This fossil coral was found in ancient ocean sea bed.  It was formed by Silica rich groundwater perculating thru it.  Over time the calcium carbonate skeleton of the coral was replaced with Chalcedony, leaving a beautiful fossil of the once living coral.

This fossil is from the Oligocene-Miocene period some 38 to 25 million years ago. Different minerals in the water over the periord of time that the fossil was forming caused the varying colors.

mineral
 

$600.00

  

GALv102b  FOSSIL CORAL North Carolina    

This is a large and beautiful geode pair of  fossilized Coral from North Carolina.  Both halves have a great polish on the cut edge and it has a beautiful natural interior as can be seen from the pictures.   Each half measures approximately 9" x 6 3/4" x 3 1/2" in depth and the combined pair weighs nearly 8 3/4 lbs.  This stunningly beautiful specimen is an awesome work of nature, it is rare and will make a great conversation piece.

  mineral  mineral  mineral  mineral

This fossil coral was found in ancient ocean sea bed.  It was formed by Silica rich groundwater perculating thru it.  Over time the calcium carbonate skeleton of the coral was replaced with Chalcedony, leaving a beautiful fossil of the once living coral.

This fossil is from the Oligocene-Miocene period some 38 to 25 million years ago. Different minerals in the water over the period of time that the fossil was forming caused the varying colors.

mineral

$650.00

 

GALv101b  AQUA MARINE

This splendid specimen of Aqua Marine on a silver mica crystal matrix is from Brazil. This astounding piece is a very pretty light blue aqua marine double crystal, very clear and beautiful.  The longest crystal measures 1 1/4" tall and the smaller attached crystal measures 1".  The larger crystal measures 1/2" x 3/8" across the top and the smaller approximately 1/4" x 1/2". This remarkable specimen is an unmatched work of nature at it's finest. 
 

        mineral  mineral  mineral  mineral  mineral

Aquamarine is the greenish-blue to blue variety of Beryl.  It forms in beautiful crystals that can be quite large and totally transparent.  Aquamarine sometimes forms in stunning crystals, it can be one of natures  most beautiful mineral masterpieces.
 

 mineral

$400.00

 

GALv110b  CASSITERITE CRYSTAL    

This gorgeous specimen is a Lustrous black Cassiterite crystal sitting on blades of silver muscovite mica from China. The crystal measures approximately  2" x 1 1/2" x 1" in size . The overall size of the specimen is 6" x 6" x 3 1/2".  This specimen formed in a cavity and has been cut from the rest of the host rock to preserve the beauty of the crystal.

mineral  mineral  mineral  mineral   

Cassiterite is a mineral that has ornately faceted specimens with high luster. It is generally opaque, but its luster and multiple crystal faces cause a nice sparkle. Cassiterite has been an important ore of tin for years and is still the greatest source of tin today.  It is found in areas throughout the world in many igneous rocks, however cassiterite is usually only a minor constituent.

 

mineral

$175.00

 

GALv103c  AZURITE - MALACHITE

This breathtaking combination specimen of Azurite and Malachite in matrix from a rare location in Utah.  It has extreme Dark Blue Azurite accented by the Dark Green Chatoyant Malachite.  It measures 2 1/4" x almost 2 1/8" x 1/2" and weighs almost 2.6 ounces.  This is a beautiful and colorful work of nature. 

mineral  mineral  mineral 


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

$3000.00

 

GALv104c  TANTALUM - COLUMBITE

Here is a superb large Columbite -Tantalite crystal on quartz matrix from the long closed Old Mike Mine near Custer, South Dakota.  Large Columbite -Tantalite crystals are very rare. This specimen shows the natural crystal formation characteristics very well and is still attached to the white to slightly smokey colored quartz matrix in which it formed.  This exceptional crystal measures 8 1/2" x 4" x nearly 1/2" thick.  Overall the specimen is over 16 1/2" x 7" x 6" and weighs in at 35 pounds.  This stunning specimen is an awesome work of nature.

  mineral  mineral  mineral    mineral

Tantalum is a gray, hard, rare, metallic element occurring in columbite and tantalite and usually associated with niobium: used, because of its resistance to corrosion by most acids, for chemical, dental, and surgical instruments and apparatus.  Columbite forms a series with the mineral tantalite.  In fact the two are often grouped together as a semi-singular mineral called columbite-tantalite in many mineral guides. The minerals of the Columbite/Tantalite families are difficult to distinguish from each other without sophisticated tests.  The combination is also called Coltan; short for columbite–tantalite and known industrially as tantalite.

 

mineral

$220.00

 

GALv105b  WULFENITE 

Here is a beautiful specimen of Wulfenite on Mottramite matrix.  This piece is loaded with yellow-Orange Wulfenite crystals in size from approximately 1 mm  to 7 mm.  These bi-pyramidal crystals set on a rugged vug filled dark brown Mottramite matrix. It measures 4" x nearly 2 3/4" x 3" and weighs nearly 1 1/2 pounds. This is an astonishing work of nature. This mineral is from Morocco.

mineral  mineral  mineral  mineral  mineral

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's are Pennsylvania, Arizona, Mexico and Morocco.  

  

mineral

$400.00

 

GALv106b  VANADINITE   

Here is a gorgeous specimen of Vanadinite on matrix from Morocco.  This uncommon piece has numerous quite rare, larger size hexagonal Vanadinite crystals with excellent colors of dark red.  The piece has many dark Red colored hexagonal Vanadinite crystals of all sizes scattered about the matrix.  The marvelous Vanadinite specimen measures 5" x over 2 3/4" x 1 1/2" and weighs nearly 10 ounces.  Close inspection shows what appears to be a fracture line best shown in the last linked picture below.  We believe the specimen to be stable but this fracture line is reflected in the price.  This is a beautiful work of nature and is absolutely stunning. Very cool!!

mineral  mineral  mineral  mineral  mineral 

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

$90.00

 

GALv107b  SPANISH PYRITE   

This is an excellent Spanish Pyrite specimen from Navajun Mine, Piritas De Navajus S.L., Spain.  This cool specimen has a large nice quality Pyrite cube in matrix.  This large Pyrite cube measures 1" x 1" x 1 3/16".   It rests in matrix measuring 3 1/8" x 2 1/4" x nearly 2" overall.  Very cool!!

mineral  mineral  mineral

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. 

 

mineral

$3000.00

 

GALv108b  GUERRERO  AMETHYST

Here is a absolutely fabulous example of a spectacular quality Amethyst from one of the premier Amethyst locations in the wold; Guerrrero, Mexico.  This unique and absolutely gorgeous Amethyst cluster has numerous different Crystal formations of lovely Purple Amethyst pointing in different directions.  This beautiful Amethyst specimen displays nicely without a stand or base.  It was actually displayed in a museum in Tucson, Arizona for some time until now offered to the public.  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.  The exceptional Amethyst cluster measures nearly 5 1/4" x almost 3 3/4" x 2" and weighs 9 ounces.  Just absolutely fabulous!!
 

mineral  mineral  mineral  mineral  mineral  mineral

Amethyst is a purple variety of Quartz often used as an ornament.  It occurs in color from a light, slightly pinkish violet to a deep grape purple.  Upon exposure to heat, Amethyst generally becomes yellow, which some refer to as Citrine or "burnt" Amethyst.  It is widely distributed as a mineral, but fine, clear specimens that are suitable for cutting as ornamental stones.

 

mineral

$650.00

 

GALv109b  SOUTH DAKOTA AMMONITE  

Here is something different for the fossil collector.  This is a very nice above average quality South Dakota Ammonite.  The exterior shows the highly detailed suture lines very well. The specimen measures 7 1/4" x nearly 6 3/4 x almost 2" thick.  It weighs 2 3/4 lbs.  This above average quality ammonite fossil is from the Pierre Shale formation in South Dakota.  
 

mineral  mineral  mineral   

Ammonites are extinct members of the cephalopod group of mollusks. Only a limited number of species have survived to the present day which includes the squid and the chambered nautilus. Ammonites had a multi-chambered shell, and added more chambers as it grew, always living in the outer chamber.  They lived in the Cretaceous period some 63 to 130 million years ago
 

mineral

$2000.00

 

GALv111b  VERA CRUZ AMETHYST  

Here is a beautiful and unique Amethyst Crystal Cluster from Vera Cruz, Mexico.  It has gorgeous Purple tipped Amethyst crystals scattered about on a sparkly druzy quartz matrix with lots of tiny bubbly crystals throughout and displays very well.   Look at the different views of this awesome specimen by clicking each picture for a full sized version.  The Vera Cruz Amethyst measures nearly 4 1/2" x 3 1/2" x almost 3 3/4" and weighs 1 3/4 pounds.  The specimen is extremely fragile with unmatched natural beauty!

mineral  mineral  mineral  mineral 

Amethyst is a purple variety of Quartz often used as an ornament.  It occurs in color from a light, slightly pinkish violet to a deep grape purple.  Upon exposure to heat, Amethyst generally becomes yellow, which some refer to as Citrine or "burnt" Amethyst.  It is widely distributed as a mineral, but fine, clear specimens that are suitable for cutting as ornamental stones.

 

I'm on Page 1
Go to Page: 
[ 2 ]

Go back to the Main Gallery Page


Ordering information and instructions

Click on the link below if  you would like to get an idea of shipping cost on your package
Shipping Calculators

The Rock Shed
515 1st Street
Keystone, SD  57751

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

Home
 Long Gemstone Beads I 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 I Agates I Findings I Clearance
Shipping Information I History I Auctions
I Pictures I Links