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Page 5
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Cost
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Item
Description
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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.
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Apophyllite-Stilbite
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$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.
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Sulfur
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$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.
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Kyanite-Quartz
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$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.
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Rhodocrosite-Calcite-Galena-Pyrite
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$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.
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Tetrahedrite
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$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.
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Apatite-Calcite
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$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.
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.
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Stibnite
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$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.
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Blue Calcite
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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.
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Amethyst
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$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.
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Las Choyas Geode
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$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.
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Wavellite
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$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.
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Bismuth
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$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!
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.
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Smokey Quartz
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$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.
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Calcite-Pyrite
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$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! Another
photo
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.
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Wulfenite
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$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.
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Apophyllite
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$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.
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Mimetite
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$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.
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Smithsonite
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$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.
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Copper
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