Minerals from Different Locations

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$40.00 M516b  Here is a very different, very beautiful combination mineral of Apophyllite and Stilbite from Nasik, India.  It measures 5" x 4 1/8" x 2 1/4" and has an interesting multi-textured appearance.  This mineral grouping has a large Peach colored Stilbite rosette and super cool clear Apophyllite cubical Crystals. The Stilbite has some dings in it but is a nice specimen overall.

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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.

stilbite apophyllite

Apophyllite-Stilbite


$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.

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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

$40.00 M502c  This is something different for the rock collector.  Here is a excellent example of Dogtooth Phantom Calcite from Mexico.  It has very nice scalenohedral or "dogtooth" calcite crystals, both dark colored and nearly clear. This cool specimen shows a red fluorescent color under UV light. It measures 5 3/8 " x 4 1/2" x nearly 1 3/4".  A true wonder of nature.

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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.  6-14-11

dogtooth calcitedogtooth calcite

Dogtooth Phantom Calcite


$12.00 M515b   This is a larger, beautiful piece of Blue Kyanite from Brazil. This is a nice specimen measuring nearly 5" x 1 5/8" x 1 1/8" and has a very pretty shaded Blue color.  This specimen has White Quartz embedded in the Blue Kyanite giving the appearance an extra sparkle and shine.

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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.

kyanite quartz

Kyanite-Quartz

 

$12.00

M512b  Here is something different for the mineral collector.  This is a rare specimen of Silver colored Bismuth.  It measures nearly 1 1/4" x 1" x nearly 1".  It has a shiny appearance and a very unique shape. 

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Bismuth is a native element.  Peru is one of the world's major sources.  Native crystals are extremely rare.  These crystals are grown in laboratories in the United States.  Bismuth is scarce as Silver, heavier than Lead and is classified as a semi-precious semi-metal.  It is non-toxic to humans.  It is used in medicine and cosmetics, applications in inks, paints, free-machining steels and fire sprinklers.

bismuth

Bismuth

$30.00 M510c  Here is something very different for the mineral collector.  This is a nice piece of Fluorite from Qinglong in the Guizhou Province of China. This pretty   and unique specimen measures 4 3/4" x 4" x 1 3/8".  A really neat addition to any mineral collection.

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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.

fluorite

Fluorite

$25.00 M513b  Here is a different but interesting specimen of Apatite resting in a bed of Orange Calcite.  It measures 3" x nearly 2 3/4" x nearly 2" and has a natural texture and finish.  This mineral has one well defined sparkly Brownish Green Apatite Crystal resting on some shiny, sparkly Orange Calcite.  The Apatite crystal came off at some point and was reattached prior to us having this specimen. This is reflected in our price. This material is from the Yates Mine, Otter Lake, Quebec, Canada.

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Apatite is a part of the phosphate group of minerals that was formed in igneous rocks and in metamorphosed limestone.  Apatite is translucent or transparent and usually green in color but can be colorless, white, yellow, bluish, reddish, brown or purple. 

apatite calcite

Apatite-Calcite

$55.00 M505b  Here is an interesting find.  This is a very nice specimen of Stibnite from China.  It measures nearly 4 1/4" x almost 1 1/2" x 7/8" and has a sparkly Grey metallic color and an unique appearance.

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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

$22.00 M504c   Here is a very interesting mineral specimen of pretty Blue Calcite.  It measures 5 7/8" x over 4 3/4" x  3 5/8" and has a soft opaque appearance.  The mineral has a subtle Blue and White color with a smooth texture. 

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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.

calcite

Blue Calcite

$38.00 M506b   This is something different for the mineral collector.  Here is a very nice, larger section of a Purple Amethyst Geode.  The specimen measures 7 5/8" x over 4 1/4" x over 2" and has a natural sparkly appearance.  This lovely piece has an array of Purple Crystals that results in a beautiful centerpiece for any area of your home or office.

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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.

amethyst

Amethyst

$12.00 M501c  Here is something different for the mineral collector.  This is a nice specimen of Wavellite on matrix.  The mineral measures 2 1/4" x 2" x 1 1/4".  This specimen is from Arkansas.  A really different mineral for the mineral collector.

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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

$20.00 M507b  Here is a very nice, above average quality Rose Quartz and Tourmaline specimen.  It measures 4 3/8" x 3 1/8" x nearly 2 1/2" and has a natural shiny appearance.  The large Tourmaline Crystal measures 3 1/8" long and has a nice natural Black color. This specimen is from the Black Hills of South Dakota. Very nice!

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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.

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.

rose quartz tourmaline

Rose Quartz - Tourmaline

$30.00 M508c  This is an interesting piece of Fluorite with clear to light Gold Calcite crystals scattered around the specimen. The specimen measures 4 3/8" x over 3 1/2" x over 2 1/2" with a very nice appearance.   A unique mineral with lots of character.

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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.

calcite pyrite

Calcite-Fluorite

$28.00 M509b    Here is a very nice specimen of Wulfenite from Mapimi in Mexico.  It measures 3" x 2 1/8" x over 1 1/2" and has a natural sparkly shine on the crystals.  This specimen has numerous crystals of a nice Yellow color. Mixed in are some Mimetite crystals in a pretty green. Just an awesome combination specimen of  rare minerals for your collection!

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Wulfenite is a lead molybdate mineral named for an Austrian mineralogist. It is most often found as thin 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. Among the more notable locations for finding Wulfenite are Pennsylvania, Arizona and Mexico.    

wulfenite

Wulfenite

$25.00 M514c   This is an interesting, very nice quality Zeolite mineral!  Here is a super sparkly Apophyllite specimen. This fantastic mineral measures 4 3/4" x 3 1/4" x 2" and has a snow-like appearance.  A great way to begin your mineral collection !  This material is from Mumbai, India.

Apophyllite, 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.

apophyllite

Apophyllite

$16.00

M503b  Here is a very nice soft Rust colored Mimetite mineral.  The mineral measures 1 3/4" x nearly 1 1/8" x 7/8" and has a sparkly, shiny appearance.  It has some very unique Mimetite Crystals resting on matrix.  Definitely something different to start a mineral collection.

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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.

mimetite

Mimetite

$20.00 M511b  Here is a very nice Citrine Crystal specimen from Brazil.  This unique specimen measures over 5 5/8" x nearly 3 1/4" x almost 2 5/8" and has sparkly darker Gold colored crystals.   These true beauties were part of larger Geodes that were broken down to show the inner Crystals.

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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.

citrine

Citrine
 

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