Mineralogy & Gemology Articles (Most Comments) — Knoji
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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 80 months ago in Mineralogy & Gemology | +19 votes | 13 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 87 months ago in Mineralogy & Gemology | +8 votes | 10 comments
Where to find gold in Massachusetts and places to look. The comparison of Massachusetts with other areas to prospect for gold and other minerals
Published by John Carter 98 months ago in Mineralogy & Gemology | +4 votes | 7 comments
Identifying the treasures of the earth – precious metals, gemstones, and crystals, birthstones, and geologist Friedrich Mohs, who devised a scale to define hardness of minerals.
Published by Tel Asiado 91 months ago in Mineralogy & Gemology | +21 votes | 6 comments
Finding gold in Idaho is about the various places in the state to search for gold and gemstones.
Published by John Carter 97 months ago in Mineralogy & Gemology | +3 votes | 6 comments
The places in Maine to prospect for gold.
Published by John Carter 98 months ago in Mineralogy & Gemology | +2 votes | 6 comments
About the former jewelry collection of Marie-Antoinette and its history.
Published by Peter Bilton 100 months ago in Mineralogy & Gemology | +17 votes | 6 comments
About the Museo de Oro in Bogota, Colombia and its history.
Published by Peter Bilton 100 months ago in Mineralogy & Gemology | +9 votes | 6 comments
Tourmaline is a less expensive yet fashionable gemstone that comes in a wide range of colors. Also where and how to find tourmaline.
Published by Peter Bilton 101 months ago in Mineralogy & Gemology | +3 votes | 6 comments
Lode gold is found in nerthern Saskatchewan in the rocks of the Canadian Shield. Placer gold is found in some of the rivers in the southern part of the province brought there by the glaciers.
Published by John Carter 96 months ago in Mineralogy & Gemology | +2 votes | 5 comments
About the gemstone ruby and its origin.
Published by Peter Bilton 100 months ago in Mineralogy & Gemology | +9 votes | 5 comments
About the largest and some of the most famous diamonds.
Published by Peter Bilton 100 months ago in Mineralogy & Gemology | +8 votes | 5 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 76 months ago in Mineralogy & Gemology | +4 votes | 4 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 87 months ago in Mineralogy & Gemology | +14 votes | 4 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 89 months ago in Mineralogy & Gemology | +9 votes | 4 comments
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#1 - Peter Bilton
#2 - John Carter
#3 - Tel Asiado
#4 - Debbie Edwards
#5 - Ron Siojo
#6 - Levy Dalumpines...
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#8 - Jan Reid
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