Mineralogy & Gemology Articles - Page 9 — Knoji
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Fluorite is referred to as Calcium Fluoride and occurs in well-formed cubic or octahedral crystals that come in a variety of colors including green, blue, purple, yellow, clear, violet and several other shades in between. It is commonly referred to as "rainbow" Fluorite. It is a soft stone; ranking only 4 on the Moh's hardness scale. It has a vitreous luster with streaks of white and has a variety of uses.
Published by Debbie Edwards 66 months ago in Mineralogy & Gemology | +3 votes | 0 comments
Autunite is known for its striking yellowish green color which is similar to a bright lemon-lime pigment. It has what's known as tabular crystals which are thin, twinned crystals that are clearly visible by eye. Autunite has been a popular mineral for collectors for several reasons. One being, it naturally fluoresces under exposure to ultraviolet light. And two, because it contains Uranium which is commonly used in manufacturing of radioactive weapons such as atomic weaponry.
Published by Debbie Edwards 66 months ago in Mineralogy & Gemology | +4 votes | 0 comments
Helenite is a man-made high quality gemstone made of volcanic glass that was comprised of the ash from the volcanic eruption of Mount St. Helens, Skamania County Washington, in May of 1980. Although Helenite is not widely known or recognized, popularity and affection for the gems is growing.
Published by Debbie Edwards 233 months ago in Mineralogy & Gemology | +5 votes | 3 comments
Learn how phosphorescent minerals, also known as fluorescent minerals, produce a glow in the dark affect when they are exposed to long wave and short wave ultraviolet light. Found not only in nature across the globe, there are also Calcite micro-crystals inside the Pineal Gland in the human brain also emit a phosphorescent glow, similar to the glow of traditional free form Calcite crystals that are found in geological formations.
Published by Debbie Edwards 74 months ago in Mineralogy & Gemology | +4 votes | 4 comments
There are three kinds of rocks that can be found on Earth. These rocks are the Igneous, the Sedimentary and the Metamorphic rocks. These kinds of rocks differ from their origin.
Published by hunterfact 78 months ago in Mineralogy & Gemology | +2 votes | 1 comments
In the late 18th century, these elements are discovered as oxidized materials – hence “earths”, they are called Rare Earths. They are just actually metals and aren’t rare; just all over the place. A cupful of dirt from a backyard might contain an iota, maybe a few parts per million. The comparison of the rarest rare earth is around 200 times more abundant than gold but deposits large and concentrated enough to be worth mining are indeed rare.
Published by Ron Siojo 78 months ago in Mineralogy & Gemology | +19 votes | 13 comments
This describes the methods used to remove stains and other soil causing conditions from mineral specimens. This article also describes some of the chemicals used in the process of cleaning.
Published by John Carter 83 months ago in Mineralogy & Gemology | +10 votes | 3 comments
What are precious stones? How are they classified, and what is their connection with hidden messages, the seasons, and a tree?
Published by Jan Reid 85 months ago in Mineralogy & Gemology | +8 votes | 10 comments
What are rare earth elements and how are they used in modern technologies.green technologies, batteries, cerium, dysprosium, erbium, europium, gadolinium, holmium, lanthanum, lutetium, neodymium, praseodymium, samarium, scandium, terbium, thorium, thulium, ytterbium, and yttrium
Published by Daniel Snyder 85 months ago in Mineralogy & Gemology | +14 votes | 4 comments
A buyer's guide to choosing a quality, loose, faceted, colored gemstone online. Learn what enhances and detracts from digital images and read tips on how to choose a stone that's right for you.
Published by Debbie Edwards 86 months ago in Mineralogy & Gemology | +4 votes | 3 comments
Aluminum is the wonder metal of this era. You see and use it every day - in the wrappers of your candy bars, in the bridges you cross, in containers for your toothpaste, in jet-propelled aircraft. Aluminum is the most plentiful of all metals, since bauxite ore, from which it is made, is found in almost every country in great abundance.
Published by Levy Dalumpines 87 months ago in Mineralogy & Gemology | +9 votes | 4 comments
Copper is one of the man\\\'s oldest and most versatile metals. It has been used since the beginning of history for utensils, tools, and weapons. Copper\\\'s many good characteristics make it an all-important metal in electricity. The major copper-producing areas are in northern Ontario, Quebec, the Gaspe, Manitoba, southern British Columbia, Newfoundland, and New Brunswick.
Published by Levy Dalumpines 87 months ago in Mineralogy & Gemology | +6 votes | 2 comments
The amethyst birthstone is a beautiful stone in shades of lavender, violet, and purple that represents those individuals born in the month of February. It is an elegant but inexpensive stone that can be worn in jewelry settings by anyone for day or evening wear.
Published by Sheryl Faber 88 months ago in Mineralogy & Gemology | +0 votes | 2 comments
Diamonds that became world famous and historical include the Koh-i-Noor Diamond, Cullinan Diamond, Orlov Diamond, Great Mogul Diamond and the Hope Diamond.
Published by Nida Cabauatan Abarca 88 months ago in Mineralogy & Gemology | +1 votes | 0 comments
Gold in Manitoba is found in the north of the province except for the southeast corner where the first gold rush occured. There are many gold mines in northern Manitoba
Published by John Carter 94 months ago in Mineralogy & Gemology | +1 votes | 0 comments
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