Minerals from Different Locations

Page 5

Cost

Item Description

Click Picture
for Larger Image

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.

Apophyllite-Stilbite

Another photo

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. 

Celestite

Another photo

Another photo

Click here for more fluorescent minerals

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 Phantom Calcite

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

$12.00

Another photo

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

Another photo

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

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

Another photo

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.

Stibnite

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.

Blue Calcite

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

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

Another photo

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.

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

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-Fluorite

Another photo

Another photo

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

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

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.

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

Another photo

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