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Page 6
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Cost
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Item
Description
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Click Picture
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$25.00 |
M601c Here is
an above average quality piece of Kyanite from Brazil. This is a nice
specimen measuring 3 3/4" x 1 5/8" x 1" and has a very pretty iridescent sheen.
This mineral has a beautiful, soft Blue matrix with larger areas of White
Quartz and several Staurolite Crystals. A very nice, unique specimen.
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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$25.00 |
M600b Here is
something different for the mineral collector. This is a larger Aragonite
specimen. It measures 3 1/2" x 1 5/8" x 2" and has a natural White color
with a very sparkly appearance. This material has a botryoidal shape
and lots of 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.
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Aragonite
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$40.00 |
M602b This is
something different for the mineral collector. Here is a larger section
of a dark Purple Amethyst Geode. The specimen measures 4 3/4" x 7 1/4"
x 1" and has a natural sparkly appearance. This lovely piece has very
light colored Crystals with tiny darker inclusions. Very different and very
nice. 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, but fine, clear specimens that are suitable for cutting as ornamental
stones.
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Amethyst
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$6.00 |
M620b Here is
a set of three Black Kyanite specimens from Brazil. The pieces measure
approximately 2+" in length and approximately 1" in width. These will
vary in size and shape and will be similar to the specimens in the picture.
This will make a nice addition to any mineral collection. Unfortunately,
there is NO choice in size and shape.
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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Black Kyanite
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$20.50 |
M605b Here is
a very nice grouping of Hemimorphite-Calcite Crystals setting on a dark Orange
base of Limonite. It measures 3 1/2" x 3" x 1 1/2" with a natural rough
appearance and many differently shaped Citrine colored Crystals. A different
mineral for the different collector. Hemimorphite is a sorosilicate
mineral that is chiefly associated with Smithsonite. It commonly forms
crystalline crusts and layers and also massive, granular, rounded aggregates
or finely shaped clusters of crystals. It may fluorescence a strong
green in UV short wave light and weak pink in UV long wave light.
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.
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Calcite-Hemimorphite-Limonite
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$20.00 |
M62b
Here is an unique specimen of Pyrite and Quartz in matrix. It has a
couple areas of Galena on the back. It measures 3 3/8" x 3 3/8" x 2".
The Quartz Crystals show a unique formation enhanced by the sparkly Pyrite.
A nice piece for your collection. Click on
any picture to see larger 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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Pyrite-Quartz
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$22.00 |
M607c Here
is a very nice Orange and White Calcite specimen. It measures 5 1/2"
x 3 1/2" x 2 1/2" and has a natural shine. This beauty has a unique
design and appearance. A great mineral to add to your collection.
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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Orange-White Calcite
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$21.00 |
M613c Here is a larger
specimen of Hemimorphite. This mineral measures 4" x 4" x 1 3/8" and
has a white Calcite covering. A very nice, very different mineral for
your collection.
Hemimorphite is a Silicate mineral that is chiefly associated with Smithsonite.
It is more rarer than Smithsonite due to the development of Crystals.
It may show strong green fluorescence in short wave ultraviolet light and
weak light pink fluorescence in long wave ultraviolet light. It is found
worldwide
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Hemimorphite
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$24.00 |
M615b Here
is a very nice interesting specimen of Dolomite resting in a bed of Crystal
Quartz. It measures 2 1/2" x 2 3/4" x 2 1/2" and has a natural texture
and finish. This mineral has several well defined sparkly-opaque, Peach
Dolomite Crystals with of shiny, sparkly Gold Pyrite accents. This material
is from Shangbao near Leiyang Hunan Province, China. Dolomite is
a sedimentary carbonate rock and a mineral which is composed of Calcium and
Magnesium. It is sometime referred to as Dolostone or Dolomitic Limestone.
It is used as an ornamental stone, as raw material for the manufacture of
cement, added to soil to lower acid levels and as a nutritional supplement.
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Dolomite-Quartz-Pyrite
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$20.00 |
M604b
This is a Apophyllite specimen from Jalgaon, India.
It measures 3 1/2" x 3" x 1 7/8" and nice, natural polish. This Crystal
cluster has several very well defined Crystal points with very clear facets.
A great addition to your mineral collection. Apophyllite, sometimes
referred to as "fish eye", is from the mineral group known as Phyllosilicates
which also include Mica. This mineral has a tendency, like Mica, to
flake off and fall apart when heated which is due to water loss. They
are typically found with igneous rocks such as Basalt. Although these
minerals are relatively unfamiliar to the general public, Apophyllites are
fairly prevalent around the world. They are popular collector's mineral
and can form "natural pyramids" when subjected to rock tumbling.
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Apophyllite
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$25.00 |
M614b
This is a smaller, rough Malachite
specimen from Zaire, Africa. This specimen has a dark Green Botryoidal, or
grape shaped, formation. This mineral specimen measures 4 1/4" x 3"
x 1 3/4". Something different for the mineral collector. 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.
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Malachite
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$28.00 |
M603c
Here is a very nice, very interesting specimen
of Lapis from Afghanistan. It measures 4 1/4" x 2 1/2" x 1 3/8" and
has a soft Blue and White color. This piece has several areas of White
Quartz and sparkly Pyrite. Just beautiful.
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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$28.00 |
M610c Here is a very
nice, larger specimen of Vanadinite on matrix. This mineral is from
Morocco. It measures 5 12" x 2 3/4" x 2" and has many hexagonal Vanadinite
crystals. This is a beautiful work of nature and very fragile.
Vanadinite is a mineral belonging to the Apatite group of Phosphate
minerals. It is one of the main industrial Ores of the metal Vanadium
and a minor source of Lead. Vanadinite is relatively uncommon and is
associated with Galena, Wulfenite, Limonite and Barite. It is usually
bright red or orange-red in color although it may sometimes be brown, red-brown,
grey, yellow or colorless.
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Vanadinite
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$35.00 |
M606b
Here is a very unique specimen combination of Okenite, Phrenite, and Calcite
Crystals in a Limestone matrix. This specimen is from Maharashtra, India.
It measures 6 1/2" x 3 1/2" x 2" with the majority of the mineral on one side
of the specimen. This mineral can not be polished as it would destroy
the soft, fuzzy spherical Okenite crystals and possibly dislodge the smaller
Phrenite bubble-like spheres. This is a one-of-a-kind mineral for the
one-of-a-kind mineral collector. Okenite is part of the Calcium Silicate
family and is an unusual mineral. It frequently appears as a cotton-ball
cluster with other minerals in matrix. The color is usually white but
may have a yellow or blue tint. Okenite has very slender long, thread
like fibers that make up a spherical or rounded aggregate. The Okenite
clusters may bring out the urge to touch the fine fibers and to test its softness.
We suggest refraining from this as the crystals are very delicate and once
touched, they are never the same again.
Phrenite is a mineral from the Calcium Aluminum Silicate group.
It can be found in shades of green, yellow or brown as well as white.
Some specimens are gem quality and make beautiful jewelry. It is found
world wide but most notable deposits are found in Australia, South Africa,
Germany and the United States.
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Okenite-Phrenite
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$32.00 |
M609c
Here is a new find at the Rock Shed. This is an above average quality,
larger piece of Goethite. It measures 4 1/4" x 2 7/8" x 3" and has a
natural rough texture. Goethite has a White Crystalline Calcite structure
with unique Iron Ore compositions. This material is from Mexico.
Another photo.
Goethite is an Iron bearing Oxide mineral found in soil and other low
temperature environments. Historically, Goethite has been used as a
paint pigment found on cave paintings in France. Its main modern use
is that of an Iron Ore content or objects using Iron Ore. Goethite is
found worldwide usually in the form of concretions, stalactitic formations,
oolites, reniform or botryoidal accumulations.
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Goethite
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$32.00 |
M612c This is
something different for the mineral collector!! Here is a very pretty
Stilbite-Apophyllite-Fluorapophyllite specimen from India. The larger
combination mineral measures 4 3/4" x 4 1/2" x 5 1/2" and has a shiny sparkly
appearance on one half and a White frosted covering on the other half.
Very neat.
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-Fluorapophyllite
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$48.00 |
M608c Here is something
really different for you mineral collection!! This is a combination
mineral specimen. It measures 4 1/2" x 3" x 2" and has a natural shiny
appearance. The mineral group consists of sparkly Pyrite, darker Grey
Galena, smaller clear Quartz Crystals and White/Beige Calcite formations.
A super mineral at a super price. What a terrific gift!!
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-Galena-Quartz-Calcite
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$15.00 |
M611b Here is a very
nice, above average quality Vanadinite specimen from Morocco. It measures
2" x 3/4" x 1/2" and has a sparkly, shiny appearance. This lovely combination
mineral has an interesting Crystal structure with beautiful Orange, very distinctive,
Crystals. Just fabulous.
Vanadinite is a mineral belonging to the Apatite group of Phosphates.
It is one of the main industrial ores or the metal Vanadium and a minor source
of Lead. It is a dense, brittle mineral usually found in the form of
red hexagonal Crystals. It is uncommon but is often associated Galena,
Barite, Wulfenite and Limonite.
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Vanadinite
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