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Page 4
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Cost
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Item
Description
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$20.00 |
M413b Here is an interesting
Calcite and Pyrite specimen. It measures 2 1/2" x 2 1/2" x 2 1/2 with
a soft frosted appearance that has a sprinkling of shiny, sparkly Pyrite.
The Calcite has an unique step like appearance that escalates upward.
This mineral group is from Morocco.
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.
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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$30.00 |
M414c Here is an interesting
mineral combination from China. This is a very nicely detailed Hematite
and Crystal Quartz specimen. It measures 2 3/4" x 2" x 1 1/2" and has
a natural finish. This specimen has petal-like design with several very
nice Crystal points.
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.
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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Quartz-Hematite
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$18.00 |
M415b Here is something different
for the mineral collector. This is a section of a larger Druzy Crystal
Quartz Geode from Morocco. This specimen measures 5" x 2" x 1 3/4" and
has a nice sparkly appearance.
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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Quartz Geode
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$25.00 |
M416b This is an interesting
mineral combination! Here is an Apophyllite-Stilbite mix. This fantastic
mineral measures 3 1/4" x 2" x 1 1/2" and has a super sparkly appearance.
This mineral has very nice Peach colored Stilbite sheaves with clear, sparkly
Apophyllite 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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Stilbite-Apophyllite
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$12.00 |
M402c This is a 3 piece set
of light Lavender Amethyst Cactus Quartz Crystals. The Crystals measure
approximately 1 1/2" to 3+" and have not been polished. These specimens
is from the Magaliesberg Mountains west of Pretoria, South Africa. A
true beauty.
The buyer will receive three (3) randomly selected Crystals that may
vary in color from lavender to white to orange. Unfortunately there
is no choice in color or size, but we do guarantee a good selection.
These Crystals are often slender Crystal cores with Amethyst tips and
are coated with orange Hematite stained mini Crystals giving the bristly,
cactus appearance. Sometimes they may have a druzy veil in lavender
or yellow or white. Each in unique in their own right and can not be
duplicated.
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Cactus Quartz
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$150.00 |
M409c
Here is a nice, above average quality Crystal Quartz specimen
from Brazil. This large Crystal measures 11 1/2" x 4 1/4" x 3" and has
two smaller "child" Crystals that measures 6" x 1 1/2" and 4 1/4" x 1/2" respectively.
A beautiful addition to any Crystal collection. 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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Crystal Quartz
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$75.00 |
M412b
This is a pretty specimen of Sphalerite from the area of Smith
County in Elmwood, Tennessee. It measures 5 5/8" x 3 1/4" x 2" and has
a dark, sparkly appearance. This beauty has two well defined flower-like,
natural Crystals that are either Barite or Calcite as it is hard to determine
from their appearance. Sphalerite is a mineral that is the chief
ore of Zinc. It consists mainly of Zinc Sulfide in crystalline form
but almost always contains valuable Iron. When the Iron content is high,
it is an opaque black variety called Marmatite. It is usually found
in association with Galena, Pyrite, Calcite, Dolomite and Fluorite.
It is usually yellow, brown or gray to gray-black in color and may have a
shiny or dull luster or sheen.
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Sphalerite
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$30.00 |
M404c Here is
something different for the mineral collector. This is a larger, rare
specimen of multi-colored Bismuth. It measures 1 1/8" x 1 1/4" x
1 1/4".
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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$18.00 |
M411b Here is a very nice
quality specimen of light Green and White Apophyllite. This beautiful
mineral measures 3 3/4" x 2 1/4" x 1 1/2" and has a natural, unpolished appearance
with sparkly iridescence.
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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$45.00 |
M407b
Here is a very nice, above average quality Red Calcite
specimen with several pretty cubical Crystals. It measures 6 1/2" x
7 1/4" x 2 3/4" and has a natural sparkly appearance. This mineral has
a several very well defined clear Crystals resting on a deep Red matrix.
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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Red Calcite
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$50.00 |
M417b
This is
something really different for the mineral collector!! Here is an above
average quality, larger Lapis specimen. This beauty measures 4 1/2"
x 3 1/4" x 3" and has not been polished. The mineral has a pretty Blue
and White color with several areas of sparkly Pyrite and White Quartz.
Just amazing. Another photo.
Another photo.
Lapis is a stone with a long tradition of being considered a gem.
It is usually deep blue in color and is opaque. It is a rock and not
a mineral as it is made up from various other minerals. The main component
is Lazurite which is a Feldspar Silicate. Lapis may also contain Calcite,
Sodalite and Pyrite. It is found worldwide.
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Lapis
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$50.00 |
M403b
This is a larger, beautiful piece of deep Blue
Kyanite from Brazil. This is a nice specimen measuring 9" x 3 1/4" x 1 1/2"
and has a very pretty shaded Blue color. This specimen has White Quartz
embedded in the Blue Kyanite making a wonderful mix of color and shine.
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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$9.00 |
M408c Here is a very
nice specimen of natural Copper from Keweenaw Peninsula, Michigan. This nugget
was rescued after a short time in a grinding mill. This one measures
2 1/2" x 1 1/8" x 1/2" and has a very nice shiny finish.
Another photo.
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 Nugget
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$85.00 |
M410b This is
a very nice, very unusual piece of Crystal Quartz from Brazil. The Crystal
cluster measures 5" x 1 1/4" x 3 1/4". Close observation will reveal
a larger Crystal in the center of the cluster penetrated by a small Crystal.
What makes this so unique is that you can actually see the tip of the small
Crystal inside the larger Crystal. Neither show any signs of damage.
There are also several other larger full Crystals throughout the cluster.
A super addition to any Crystal collection.
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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Crystal Quartz
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$75.00 |
M400c This is something different for the mineral
collector. Here is an above average quality specimen of Sphalerite.
The unusual mineral measures 4 5/8" x 2 1/4" x 1 3/4" and has an unusual shape with
a very shiny appearance.
Another photo.
Sphalerite is a mineral that is the chief ore of Zinc. It consists
mainly of Zinc Sulfide in crystalline form but almost always contains valuable
Iron. When the Iron content is high, it is an opaque black variety called
Marmatite. It is usually found in association with Galena, Pyrite, Calcite,
Dolomite and Fluorite. It is usually yellow, brown or gray to gray-black
in color and may have a shiny or dull luster or sheen.
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Sphalerite
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$25.00 |
M406b
Here is something different that we have not had before. It is a Pyrite
Nodule from Peru.
It measures 1 3/4" x 1 1/8" and has a natural shiny finish.
Each nodule has its own shape and character. 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.
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Pyrite
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$390.00 |
M405c
Here is a very nice Rhodocrosite specimen from Peru. It measures
4" x 3 1/2" x 3 1/2" and has a very unique, natural exterior. It has
a bright Pink to deep Rose color and has a very different natural design.
An interesting, one of a kind specimen for your mineral collection.
Another photo.
Another photo.
Another photo.
Rhodocrosite is a Manganese Carbonate mineral. It is typically
a rose-red color, but impure specimens can be shades of pink to pale brown.
It is used as a key component of low-cost stainless steel and certain Aluminum
alloys. Quality banded specimens are often used for decorative stones
and jewelry, although it is relatively soft and difficult to cut.
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Rhodocrosite
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$160.00 |
M401c
Here is an above average, larger specimen of natural Copper-White Quartz
from Keweenaw Peninsula, Michigan. It measures 10 1/4" x 5" x 2" and has a
natural shiny luster. This is natural native Copper which has been removed
from the matrix rock, has three small areas of Silver which only enhance the
mineral. It is the natural native Copper just as it formed in the rock.
Another photo.
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-Silver-Quartz
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