Douglas Watts
By Douglas Watts. Pic 1. Pic 2. The quarries and pegmatite complex on the eastern side of Mount Apatite in Auburn, Maine are just about the only places left where the public can visit, view and collect gem Maine tourmaline. This exception is due to the foresight of the people of the City of Auburn, who wisely acquired the land in the 1970s …
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Pyrochlore from the Silver Crater Mine, ON, Canada
minerals Article The Crystallinity of Apatite in Contact with Metamict Pyrochlore from the Silver Crater Mine, ON, Canada Christopher Emproto 1, Austin Alvarez 1, Christian Anderkin 2 and John Rakovan 1,* 1 Department of Geology and Environmental Science, Miami University, Oxford, OH 45056, USA; [email protected] (C.E.); …
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Mindat
Explore the world of minerals and learn about apatite, a group of phosphate minerals with diverse colors and forms. Find out where apatite is found and how it is used.
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Apatite Meaning, Value and Properties | Chroma Gems & Co
Apatite, a group of phosphate minerals, is a gemstone that is as diverse as it is beautiful. It is renowned for its wide range of colors, from the deep blues of the ocean to the lush greens of a forest, making it a coveted choice for jewelry and decorative pieces. Apatite's name, derived from the Greek word "apatao," meaning to deceive ...
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how much apatite mineral would be worthwhile to mine
how much apatite mineral would be worthwhile to mine The ore contains a very pure magnetite-apatite mix, containing more than 60 iron and an average of 09 phosphorus Black ore contains less apatite than grey ore The original reserve at Kiruna …
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Minerals | Free Full-Text | Apatite Biominerals
One of the most emblematic trace elements is fluorine, existing in the form of fluoride ions, and mostly found in the apatite biomineral (99% of the F body burden). The fluoride content varies strongly depending on dietary uptake, though in normal bone it constitutes 0.05% to 0.1%.
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Mineral chemistry in apatite from heavy mineral
1. Introduction. Phosphate ores are made up of several types of minerals, the most common being calcium phosphates from the apatite supergroup. The manufacture of fertilizers in Brazil uses apatite, a type of raw material from the rare occurrences of carbonatitic rocks, with >80 % of the production capacity of apatitic concentrates …
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FOMS
The apatite of Palache (1935) is mostly this species. It was reported by Nuttall (1822) and Penfield (1880); the extant data were summarized by Palache (1935). Much blue and green fluorapatite from the orebodies has been mislabeled as svabite, not known with certainty from here. The aquatite of Koening (1889) is a printer's misspelling for apatite.
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Apatite Value, Price, and Jewelry Information
Everything you ever wanted to know about apatite. Find value guidelines, scientific data, expert comments, and more in our Gemstone Listings. ... the term "apatite" refers to the …
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APATITE AND ROCK PHOSPHATE Indian Minerals …
APATITE AND ROCK PHOSPHATE 1 Apatite and Rock Phosphate A patite is a group of phosphate minerals and named by German Geologist Abraham Werner in 1786. It is the most abundant crystalline phosphate mineral found as an accessory mineral in practically all kinds of igneous rocks. Sometimes, it is concentrated in pegmatites, metallic veins and
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The many facets of apatite
1 5193REVISION #2 PRESIDENTIAL ADDRESS 1 The many facets of apatite JOHN M. HUGHES Department of Geology, University of Vermont, Burlington, VT 05405, U.S.A. Abstract In the past 150 years, with the discovery of petroleum and the invention of …
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Apatite
Description:-. Apatite is a mineral and commonly known as a type of phosphorus chemical which is very much required in the process of photosynthesis. It is also a gemstone that is transparent and very rarely found. Most of the consumers in the jewellery world still do …
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Hydrothermal Alteration Revealed by Apatite
The common occurrence of resistate minerals, such as apatite, rutile, and titanite, as alteration products in many porphyry copper deposits (e.g., Williams and Cesbron, 1977; Czamanske et al., 1981) suggests that these minerals could be utilized as porphyry indicator minerals (PIMS).Such applications have only rarely been considered …
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Apatite: A Mineral for All Seasons – Elements Magazine
Apatite is a superb mineral by which to investigate the nature of fluids that have passed through and altered a rock (metasomatic processes). Its ubiquity allows it to act as a …
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Minerals | Special Issue : Apatite and Ore Deposits
Apatite (Ca 5 (PO 4) 3 (OH,F,Cl)) is an ubiquitous accessory phosphate mineral found in many types of rocks and environments. This is particularly true with regards to ore deposits. This mineral has several key characteristics that are very useful when one is interested in the characterization and/or the dating of the circulations of fluid …
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Appetite for apatite: Rock-eating fungi help "mine" minerals
Consequently, different minerals have different signature ratios of calcium to strontium. The ratios in the foliage revealed that spruce and fir trees were tapping into apatite—via fungal hyphae—for their calcium, whereas sugar maples, which lack ectomycorrhizal fungi, could only sip it from the soil solution.
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Violet Apatite Panasqueira
I bought this exceptional specimen at the mines, maybe around 2002 when high quality pockets were found while working the upper levels of the mine. The color of this apatite crystal is truly rare, it is very difficult to define it because it depends of the type of light and also how it reaches the crystal.
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Apatite: Its uses as a mineral and gemstone
Physical Properties. Apatite is best known for its use as an index mineral with a hardness of 5 in the Mohs Hardness Scale. It is usually green in color, but can be yellow, brown, blue, purple, pink, or colorless. These colors are often so vivid that apatite has frequently been cut as a gemstone. Apatite is a brittle material.
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Lunar apatite with terrestrial volatile abundances | Nature
The mineral apatite—Ca 5 (PO 4) 3 (F,Cl,OH)—is widely distributed in planetary materials. Terrestrial igneous apatite incorporates S as sulphate and C as carbonate, both substituting for ...
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Appetite for apatite: Rock-eating fungi help "mine" …
ANN ARBOR — With the help of rock-eating fungi, some types of trees are able to "mine" calcium, a nutrient essential to their growth, a research team led by …
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Apatite from Crystals to Phosphate Rock | Rock
July 1, 2023. 0. Apatite crystals are a favorite among collectors with their stubby, terminated, hexagonal prisms, glassy transparency, and soft, yellow-to-greenish-yellow or blue mineral colors. These beautiful …
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Minerals | Special Issue : Apatite and Ore Deposits
Apatite (Ca 5 (PO 4) 3 (OH,F,Cl)) is an ubiquitous accessory phosphate mineral found in many types of rocks and environments. This is particularly true with regards to ore deposits. This mineral has several …
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Apatite Mineral Data
PE Apatite = 5.87 barns/electron U=PE Apatite x rElectron Density= 18.59 barns/cc. Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units) Apatite is Not Radioactive
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Apatite: A Mineral for All Seasons – Elements Magazine
Apatite is a superb mineral by which to investigate the nature of fluids that have passed through and altered a rock (metasomatic processes). Its ubiquity allows it to act as a reservoir for P, F, Cl, OH, CO2, and the rare earth elements. It is also a powerful thermochronometer and can be chemically altered by aqueous brines (NaCl–KCl–CaCl2 ...
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Apatite | Properties, Occurrence, Uses
Apatite is a mineral that is composed of calcium phosphate, with the chemical formula Ca5(PO4)3(OH,F,Cl). It is a member of the apatite group of minerals, which also includes hydroxylapatite …
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MINERAL MINING TECHNOLOGY Undermined Rock …
The index JS means jointing density (FF / m) and JS ≈ ≈ 35 for the apatite deposits. The index JС in closed joints is varied from 3 to 40. We assume JС = 20. Water ingresses lower the strength of rock mass at an approximate reduction factor K = 0.8. the other reduction factors (weathering, etc.) are neglected.
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Apatita | Propriedades, Ocorrência, Usos
A apatita é um mineral composto de fosfato de cálcio, de fórmula química Ca5(PO4)3(OH,F,Cl). É um membro do grupo apatita de minerais, que também inclui hidroxiapatita e fluorapatita.A apatita é um mineral relativamente comum que pode ocorrer em uma variedade de cores, incluindo amarelo, verde, azul e roxo. É um mineral …
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Butte, Montana – The Richest Hill on Earth
The Butte mining district of Montana: A summary of the minerals, mineralogy and geology. Checkout. 0 item @ $0.00 . Home | My Cart ... Apatite – Mineral specimens of apatite may be found crystallized encasing enargite, as aggregates of dull, gray green, hexagonal prisms to 0.25mm. Mineral specimens of apatite have also been found as gemmy ...
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Mount Apatite
Today amateurs may still search the mine tailings for Apatite, Tourmaline, and Quartz specimens (specific rules apply). With assistance from a Land and Water Conservation Fund matching grant, five kilometers (3.1 miles) of multi-purpose trails were constructed in the summer of 1994 within the park to serve all outdoor enthusiasts.
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Mount Apatite Park, Auburn, Maine
During feldspar mining the quarry workers sometimes encountered rare and unusual minerals. (The mountain is named after a phosphate mineral called apatite, which was found as beautiful deep purple crystals at the Pulsifer Quarry on the west side of the hill. See Figure 2). These minerals might be put aside to be sold to uraged
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