Minerals from Different Locations

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$15.00 M105c  This is a great find!!  Here is a very large, very nice quality specimen of Black Mica from Canada.  It measures 3 3/4" x 4 1/2" x 1" and has a nice shiny appearance.  This would make a great gift for the "hard to buy for" person.

Black Mica, or Biotite, is a sheet Silicate usually composed of Iron, Magnesium, Aluminum, Silicon, Oxygen and/or Hydrogen.  It is sometimes called 'Iron Mica' because it is more iron rich than other Micas.  It is also more flexible than other Micas and may resemble a book with many pages.

mineral

Black Canadian Mica


$45.00 M113c  This is a nice quality and beautiful specimen of polished Malachite from Zaire, Africa. The overall size of specimen is  2 3/4" x 3 5/8" x 1 1/4". This specimen is polished on all sides except the bottom. 

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.

malcachite

Malachite

$12.00 M112b   Here is a very different mineral to add to your mineral collection.  This is a Hematite on Quartz specimen from Utah.  It measures 4" x 3" x 2" and has a nice silvery, sparkly appearance. 

Hematite is a mineral form of Iron oxide.  It is a very common material that has a black to steel grey to silver grey color and may also appear reddish brown.  Hematite is a heavy metal mineral.  When it is polished it is consider to many to be of gemstone quality.  It is very popular in jewelry and Native American art.

mineral

Hematite-Quartz

$22.00 M106c   This is a smaller, but very pretty specimen of unpolished Malachite from Africa.  It measures 2 1/2" x 2 3/4" x 1 1/4" and has a natural botryoidal appearance.  This piece of Malachite is unpolished to show the natural beauty.  A very nice work of nature.

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

$60.00 M101b  Here is a very beautiful Tourmaline and Crystal Quartz specimen.  It measures 3" x 3" x 3".  This is a natural beauty  that has many single Crystal points with several "petal" like formations of black Tourmaline interspaced between the Crystals.  This is a very wonderful example of nature at its best.  This material is from China.

Tourmaline is one of the most chemically complicated of all Silicate minerals.  It is a complex Silicate of Aluminum and Boron and the composition varies widely with Sodium, Calcium, Iron, Magnesium, Lithium and many other elements that enter into it's structure.  It can occur in a long, slender needle-like crystal to a thick prismatic and columnar crystal to a radial like daisy formation.  It comes in many colors usually black and brown (iron rich); brown and yellow (magnesium rich); and blue, red, green, yellow, and pink (lithium rich). 



Tourmaline-Crystal Quartz

$20.00 M107b  Here is a Galena-Pyrite-Quartz combination mineral specimen.  It measures 2" x 2" x 1" with a very unusual shape and design.  This is a one-of-a-kind mineral.  Make it an addition to your collection today. 

Galena is the natural mineral form of Lead Sulfide.  It is the most important Lead ore mineral and is one of the most abundant and widely distributed sulfide minerals.  It is often associated with Sphalerite, Calcite and Fluorite.  Galena deposits often contain significant amounts of Silver, Zinc, Cadmium, Antimony Arsenic and Bismuth.  It is used as a semiconductor in early wireless communication systems.  It is usually dark grey to black in color with a shiny iridescence.

galena

Galena

$35.00

M100c   A Spanish Pyrite specimen from Navajun Mine, Piritas De Navajus S.L., Spain.  This specimen consists of 1 nice quality Pyrite cube with a smaller Pyrite cube in matrix.  The larger cube measures approximately 1/2" x 5/8" x 3/8" in size and the smaller cube measures 1/8' x 1/8".  They rest in a matrix measuring 1 3/4" x 2 1/2" x 1 1/2".

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. 

pyrite

Spanish Pyrite

$35.00

M114b  This is an interesting mineral combination!  Here is an Apophyllite-Stilbite-Heulandite mix. This fantastic mineral measures 5 3/4" x 5 1/4" x 2 1/4" and has a super sparkly appearance.  A great way to begin your mineral collection with a smaller collection all in one!!

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

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.

zeolite

Apophyllite-Stilbite-Heulandite

$28.00 M108c  Here is something different for the mineral collector.  This is a larger, very unique Aragonite specimen.  It measures 4 1/4" x 2 3/4" x 1 1/2" and has a natural White to Cream color.  This material has a botryoidal shape and lots of character. The material is usually formed in the ocean and will resemble Coral.

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.

aragonite

Aragonite

$12.00 M111c  Here is a great find!!  This is a smaller  Malachite-Azurite specimen from Rico, Colorado.  It measures 1 1/8" x 2 1/8" x 1 1/2" and has a natural texture.  The mineral has a good color mix and resembles Chryscolla, a rarer mineral.

Azurite is a deep blue Copper mineral produced by the weathering of Copper Ore deposits.  The color is exceptionally clear and deep.  Azurite specimens are typically massive to nodular and are often stalactitic in form.  The color tends to lighten over time due to the weathering of the specimen surface into Malachite.

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 azurite

Malachite-Azurite

$250.00 M116b   Here is a larger, above average quality Crystal Quartz cluster from Arkansas.  It measures approximately 9" x 10 1/2" x 3 1/2" and has not been polished.  This unique cluster has several different Crystal formations including barnacles, cathedrals, lasers, manifests, tabular and one well defined cross.  This wonderful beauty comes with its own stand and is boxed and ready to go to its new home.

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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.

crystal

Crystal Quartz

$25.00 M102b  This is a different mineral for the avid mineral collector.  Here is a larger Copper Brown and White Aragonite specimen.  It measures 3 1/4" x 2 1/4" x 1 3/4" and has a natural sparkly appearance.  This is an unique mineral with interesting design and character.

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.

aragonite

Aragonite

$30.00 M109c  Here is a very nice, larger specimen of Heulandite from India.  It measures 3 1/2" x 6 1/2" x 2" and has a sparkly iridescent appearance.  This mineral is an unique combination as not only does it have a large specimen of Heulandite but also 4 well defined cubical Apophyllite Crystals and numerous, tiny sword-like Calcite Crystals.  Absolutely AMAZING!!

Heulandite is a member of the tecto-silicate mineral family which is part of the Zeolite group.  It is often found with Calcium, Aluminum, Sodium, Potassium and Strontium.  It is found in Iceland, India, and on the eastern coast of the United States.  Heulandite can be white, yellow or red.

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.

mineral

Heulandite-Apophyllite-Calcite

$45.00 M117b   Here is an above average quality of a larger specimen of Hemimorphite Crystals setting on a dark Rust base of Limonite.  It measures  6 1/2" x 3 3/4" x 2" with a natural rough appearance and many differently shaped translucent Grey and Clear Crystals.  A different mineral for the different collector.  This material is from Mexico.

Limonite is an ore consisting of a mixture of hydrated Iron Oxide-Hydroxide of varying composition of minerals such as Goethite, Lepidocrocite, or Jarosite.  It has been mined with Hematite as an Ore for the production of Iron. Limonite is heavy and has a yellow-brown color.  It is often used as the pigment ochre in many paints.

Hemimorphite is a mineral that has been mined with Zinc and Lead ores and is associated with Smithsonite.  Some specimens will show a strong green fluorescence in short wave UV light and weak light pink fluorescence in long wave UV light.  This mineral can be found world wide.

hemimorphite

Limonite-Hemimorphite

$15.00

M103b  Here is a very nice, smaller Picture Sandstone slab from Arizona.  It measures 2 1/2" x 5" x 3/8" and has a smooth, unpolished finish.  These slabs are very unique in shape and size but would enhance any table or desk top.  It comes complete with a plastic display stand.

Sandstone is a sedimentary rock composed mainly of sand size mineral or rock grains.  Most Sandstone is composed of Quartz and/or Feldspar because these are the most common minerals in the earth's crust.  It can be almost any color.  The Sandstone beds often form highly visible cliffs and are strongly identified with certain regions of the world.

sandstone

Picture Sandstone Slab

$11.95 1K12  This is a Mineral Collection Kit. Enclosed is 18 different identified specimens. They are, Amazonite, quartz, agate, alabaster, fossiliferous limestone, fluorite, gold ore, marble, pyrite, calcite, jasper, obsidian, pumice, copper ore, lava, Selenite, Lepidolite and variscite.  The kit comes with a write up about sedimentary, igneous and metamorphic rocks.  Each specimen comes in its own bag. This is a great learning  item for kids.

Mineral collection kit

Mineral Collection Kit

$15.00

M104c  Here is a really great find!!  This is an extra nice, above average quality Dugway Geode from Utah.  It  measures 3" x 2 1/2" x 1 1/2" and has a nice polish on the front face. The inside of the cavity is lined with fine druzy Quartz Crystals with a hint of Lavender color.  Just beautiful.

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.

geode

Dugway Geode

$35.00 M110b  Here is a very nice specimen of Purple Fluorite.  This a nice quality mineral measuring 3 1/4" x 2 1/2" x 1 1/4" and has a rough, natural texture with sparkly iridescence.  The color is a deep Purple with an almost translucent appearance.  This specimen is from Cave in the Park, Illinois.

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

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