Boulangerite

Home Igneous Sedimentary Metamorphic Rock Cycle Boulangerite Boulangerite is one of a few sulfide minerals that form fine acicular crystals that appear as hair-like fibers. The fibrous aggregates may be so thick as to cover a specimen with hair-like fibers or it may be sparsely disseminated between other minerals and may be confused with actual…

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Aventurine

Home Igneous Sedimentary Metamorphic Rock Cycle Aventurine Aventurine is a translucent to opaque variety of micro crystalline quartz. It contains small inclusions of shiny minerals which give the stone a sparkling effect known as aventurescence. Aventurine commonly ranges from light to dark-green in color. The color is caused by trace elements of fuchsite in colorless…

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Aquamarine and Schorl

Home Igneous Sedimentary Metamorphic Rock Cycle Aquamarine and Black Tourmaline (Schorl) Aquamarine, which has been known since antiquity, was recognized as a variety of beryl in 1797. The name “aquamarine,” pronounced ahh-kwa-mar-REEN, stems from the Latin aqua marina, literally meaning “sea water,” in allusion to its blue and greenish-blue colors. Important collecting localities are in…

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Apatite

Home Igneous Sedimentary Metamorphic Rock Cycle Apatite Beautiful Apatite Crystal on Matrix 24 $61.00 Add to cart Large Cabinet specimen of Apatite Crystals in Biotite Mica Matrix 22 $99.00 Add to cart Stunning Apatite Crystal on Matrix 23 $59.00 Add to cart Item # APA07100569EPersonal Collection XLS Apatite on Calcite with Augite from Yates Mine,…

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Titanic Coal

Home Igneous Sedimentary Metamorphic Rock Cycle Coal recovered from the wreckage of the RMS Titanic About Titanic Coal…What is the time line and what are the differences? When the Titanic Coal was first sold in the mid 1990’s the pieces of coal were larger, about 1 inch pieces. Through the years, as the amount for…

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Anhydrite

Home Igneous Sedimentary Metamorphic Rock Cycle Anhydrite Anhydrite is a sedimentary mineral created from Gypsum and forms as large rock layers. The process of forming Anhydrite from Gypsum occurs through evaporative rejection of water occurring at the right temperature. This loss of water produces a reduction in volume of the rock layer and can cause…

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Amethyst Geode Spheres

Home Igneous Sedimentary Metamorphic Rock Cycle Amethyst Geode Spheres Amethyst Geode Sphere What Is A Geode? Amethyst Geode Spheres. The mysterious earth-shaped geodes have long challenged geologist to explain how they are formed. Geodes are a variable phenomenon and, therefore, many theories exists to explain how they are created. The term geode is derived from…

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Amethyst from Roraima, Brazil

Home Igneous Sedimentary Metamorphic Rock Cycle Amethyst from Roraima, Brazil Mount Roraima, Brazil Amethyst from Roraima. Mount Roraima is an immense table mountain with a total surface area of 26 square miles, twelve of which are on the summit. Its sheer wall of red rock rises powerfully almost 10,000 feet up from the forested slopes.…

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Amethyst, Black, from Uruguay

Home Igneous Sedimentary Metamorphic Rock Cycle Black Amethyst from Uruguay Black Amethyst from Uruguay was First Found in 2012. These are amethyst stalactitic looking formations of thin velvet like fingers that are coated in drusy quartz and a natural mixture of minerals during their growth that make them appear purple black or purple grey or…

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Tree of Life

Home Igneous Sedimentary Metamorphic Rock Cycle Tree of Life Tree of Life is a universal symbol found in many spiritual and mythological traditions around the world. In various cultures it is known as the Cosmic Tree, the World Tree and the Holy Tree. The Tree of Life symbolizes many things, including wisdom, protection, strength, bounty,…

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