Minerals from Different Locations

Page 5

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$25.00 M516b  Here is a very different, very beautiful light Green and Off-White combination mineral.  It measures 3 1/2" x 3" x 2 3/4" and has an interesting multi-textured appearance.  This mineral grouping has a larger Off-White "flower surrounded by a super cool clear to light Green Apophyllite cubical Crystals.

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 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


$12.00 M500c  This is a beautiful bright yellow specimen of Sulfur.  It measures 2 5/8" x 2 1/8" x  1 1/2" and has not been polished.  This Sulfur specimen has some very nicely defined and sparkly crystals. This material is from Durango, Mexico.

Another photo.

Crystals of Sulfur are usually yellow to yellowish-brown blocky dipyramids. Also it is found more typically as powdery yellow coatings. Native Sulphur is usually formed from volcanic action - as a sublimate from volcanic gasses associated with Realgar, cinnabar and other minerals. It is  found in some vein deposits as an alteration product of sulfide minerals.

sulfur

Sulfur


$24.00 M515c   This is a larger, beautiful piece of Blue Kyanite from Brazil. This is a nice specimen measuring 7" x 1 1/2" x 1 1/4" and has a very pretty shaded Blue color.  This specimen has White Quartz, with a touch of Iron Ore, embedded in the Blue Kyanite giving the appearance an extra sparkle and shine.

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.

kyanite quartz

Kyanite-Quartz


$24.00 M512b  Here is a very nice, larger piece of Rhodocrosite with several Calcite Crystals mixed with Galena on a Limestone bed with an extra bonus of very tiny, very sparkly Pyrite Crystals on the bottom of the specimen.  It measures 3 5/8" x 3" x 1 3/4" and has a nice peach, sparkly appearance.  This mineral is from Santa Rita Mine in Peru.

Rhodocrosite is a Manganese Carbonate mineral.  In its rare, pure form, it is typically a rose-red color but impure specimens can be shades of pink to pale brown with pink as the most common color.  Rhodocrosite is often associated with Calcium, Zinc and Magnesium.  Its main use is as an Ore of Manganese which is a key component of stainless steel and certain aluminum alloys.  It is relatively soft in formation and is very difficult to cut and therefore is rarely found faceted in jewelry.

mineral

Rhodocrosite-Calcite-Galena-Pyrite

$44.00 M510b  Here is something very different for the mineral collector.  This is a nice piece of Tetrahedrite from Pachapaqui Ancash in Peru.  This specimen measures 2 1/8" x 1 1/4" x 3/4" with several smaller crystal areas.  A really neat addition to any mineral collection.

Tetrahedrite is a rare Copper antimony sulfide mineral.  It is closely related to Tennantite and other elements, most notably Iron and Zinc along with less common Silver, Mercury and Lead.  It gets its name from the distinctive tetrahedron shaped cubic Crystals and usually occurs in massive form.  The color is steel grey to a metallic black.

tetrahedrite

Tetrahedrite

$35.00 M513c  Here is a different but interesting specimen of Apatite resting in a bed of Orange Calcite.  It measures 3 1/4" x 3 1/2" x 2 1/2" and has a natural texture and finish.  This mineral has one well defined sparkly Brownish Green Apatite Crystal with shiny, sparkly Calcite in Orange with Purple Fluorite accents.  This material is from the Yates Mine, Otter Lake, Quebec, Canada.

Another photo.

Another photo.

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

$20.00 M505c  Here is an interesting find.  This is a very nice specimen of Stibnite from China.  It measures nearly 2 1/4" x 1 1/4" x 3/4" 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

$12.00 M504b   Here is a very interesting mineral specimen of pretty Blue Calcite.  It measures 4" x 4" x  over 2 3/4" and has a soft opaque appearance.  The mineral has a subtle Blue and White color with a smooth, natural texture. 

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.

calcite

Blue Calcite

25.00 M506b   This is something different for the mineral collector.  Here is a very nice, larger section of a Purple Amethyst Geode.  The specimen measures 6 3/4" x over 4 1/4" x over 1 1/2" 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.

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.

amethyst

Amethyst

$50.00 M502b  This is something different for the rock collector.  Here is a hollow geode pair from Las Choyas Geode Mine in  Mexico.  It measures 3 1/2" x 3 1/4" x 2 1/4 on each side and has been cracked open to see the beauty of the crystals inside.  Inside on the one side are rare Angel Wing crystals. A true wonder of nature.

Another photo.

Another photo.

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

Las Choyas Geode

$12.00 M501c  Here is something different for the mineral collector.  This is a nice specimen of Wavellite on matrix.  The mineral measures 2 14" x 2" x 1 1/4".  This specimen is from Arkansas.  A really different mineral for the mineral collector.

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

$25.00 M518c  Here is something different for the mineral collector.  This is a rare specimen of multi-colored Bismuth.  It measures 1 1/4" x 1 1/4" x 1 1/2".  It has a shiny appearance and a very unique shape. 

Another photo.

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

$20.00 M507c  Here is a very nice, above average quality Smokey Quartz specimen.  It measures 3 3/4" x 2 3/8" x 3 1/2" and has a natural shiny appearance.  These Crystals have been irradiated which enhances the dark smokey color. 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.

smokey quartz

Smokey Quartz

$25.00 M508c  This is an interesting piece of light Gold Calcite covered with a sprinkling of shiny, sparkly Pyrite.  It measures 1" x 1 1/5" x 2 1/4" with a very nice cubical appearance.  This material is from Morocco.

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-Pyrite

$24.00 M509b    A new item here is a very nice specimen of Wulfenite from Mapimi in Mexico.  It measures over 2" x 1 3/4" x 1 1/4" and has a natural sparkly shine on the crystals.  This specimen has numerous crystals of nice Yellow color. Just an awesome specimen of a rare mineral 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 cystals 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

M503c  Here is a very nice soft Rust colored Mimetite mineral.  The mineral measures 1 5/8" x 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.

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.

mimetite

Mimetite

$50.00 M511b  Here is a very different mineral for the mineral collector.  This is a very nice specimen of Smithsonite that measures nearly 3 1/8" x 2 1/4" x 1 5/8"and has a bright light Blue color. This material is from Sinaloa, Mexico. Just nice.

Another photo

Another photo

Smithsonite is a mineral ore of zinc. It was first described in the 1832 for James Smithson, whose estate financed the famous Smithsonian Institution.  Smithsonite is typically found is botryoidal masses rather than is crystals. It comes in various colors from green to blue to pink. It is found commonly in association with Heminorphite, Malachite, Azurite, Hydozincite and Anglesite. Zinc carbonate has many uses from fireproofing to a feed additive to a a pigment in cosmetics and lotions.

smithsonite

Smithsonite
 

$35.00 M517c  Here is a nice specimen of natural Copper from Keweenaw Peninsula, Michigan. This is natural native copper which has been removed from the matrix rock which was surrounding it.  It is the natural native copper just as it formed in the rock.  It weighs in at 1 lb and 4 oz.

Another photo.

Copper is a reddish colored metal with a high electrical and thermal conductivity.  It has its characteristic color because it reflects red and orange light and absorbs other frequencies in the visible spectrum due to its band structure.  It is in the same family as Silver and Gold and is a malleable metal.  It is beautiful natural or polished.

copper

Copper
 

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