properties alunite mineral :
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Alunite: Mineral information, data and localities.
Pabst A (1947) Some computations on svanbergite, woodhouseite and alunite American Mineralogist 32 16-30: 1947: 0: 293: 0009047: Alunite: Majzlan J, Speziale S, Duffy T S, Burns P C (2006) Single-crystal elastic properties of alunite, KAl3(SO4)2(OH)6 Physics and Chemistry of Minerals 33 567-573: 2006: 0: 293: 0018984: Alunite
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Alunite Mineral Data
Optical Properties of Alunite : Gladstone-Dale: CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC) ... McDougall Minerals Google Search for Alunite Mineral News Website Link Rock and Mineral Shows Google Search for Alunite Weinrich Minerals, Inc. Google Search for Alunite.
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Alunite: Meanings, Properties and Powers - The Complete
2021-11-21 Alunite Properties. Also known as Angel Wing, Alunite is often found in a combination of colors, usually in pairing with red. The stone may be red with white streaks all over, or contain a pairing of red with light, creamy pink or yellow blotches of color spread across the stone in varying amounts, depending on the minerals.
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Thermodynamic mixing properties of alunite supergroup ...
2019-3-1 1. Introduction. The alunite mineral supergroup has the general formula of DG 3 (TO 4) 2 (OH,H 2 O) 6 (Dutrizac and Jambor, 2000).The D sites are occupied by monovalent, divalent, or trivalent cations, G is mainly Al 3+ or Fe 3+, and TO 4 can be SO 4 2+, AsO 4 3−, PO 4 3−, or CrO 4 2+.Jarosite [(K, Na)Fe 3 (SO 4) 2 (OH) 6] and alunite [(K,Na)Al 3 (SO 4) 2 (OH) 6] are two representative ...
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alunite Mineral, Description, Uses, Facts Britannica
Alunite, a widespread rock-forming sulfate mineral that occupies pockets or seams in volcanic rocks such as rhyolites, trachytes, and andesites, where it presumably formed through their chemical reaction with escaping sulfurous vapors. It has been used as a
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Properties and hydration of blended cements with mineral ...
Alunite, K2SO4 Al2(SO4)3 4Al(OH)3 is a mineral not soluble in water in its original form. It was formed by hydrothermal alteration of tuff. Therefore it contains approximately 50% SiO2.
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(PDF) Single-crystal elastic properties of alunite, KAl3 ...
Elastic constants of tourmaline crystals of known chemical composition have been measured by the ultrasonic phase‐comparison method. The values in 1012 dyn/cm2 are C11=3.050, C33=1.764, C44=0 ...
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SPECTRAL PROPERTIES OF ALUNITE-KAOLINITE
2019-1-10 µm remains present even at 75 wt.% alunite, although it is influenced by the alunite absorption at 1.427 µm. Conversely, the 1.427 µm alunite absorption readily disappears with decreasing alunite abundance, becom-ing a shoulder at 50 wt. % alunite, and disappearing Fig. 1: VNIR reflectance spectra of alunite (blue) and ka-
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Alunite: Properties and Occurrence - Assignment Point
2021-11-13 Alunite: Properties and Occurrence. Alunite is a hydrated aluminum potassium sulfate mineral, formula KAl 3 (SO 4) 2 (OH) 6. It is a sulfate mineral, first discovered in Monti della Tolfa, Rome, in the 15th century, where it is mined for the
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alunite Mineral, Description, Uses, Facts Britannica
alunite, also called Alum Stone, a widespread rock-forming sulfate mineral that occupies pockets or seams in volcanic rocks such as rhyolites, trachytes, and andesites, where it presumably formed through their chemical reaction with escaping sulfurous vapours. It
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Wisconsin Geological Natural History Survey » Alunite
Formula: KAl 3 (SO 4) 2 (OH) 6 Hexagonal Description: Alunite is an inconspicuous grayish massive mineral formed by the alteration of pyrite and other sulfides during weathering or solfatara activity. It is probably widespread in Wisconsin but has so far
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Alunite Group: Mineral information, data and localities.
Pabst A (1947) Some computations on svanbergite, woodhouseite and alunite American Mineralogist 32 16-30: 1947: 0: 293: 0009047: Alunite: Majzlan J, Speziale S, Duffy T S, Burns P C (2006) Single-crystal elastic properties of alunite, KAl3(SO4)2(OH)6 Physics and Chemistry of Minerals 33 567-573: 2006: 0: 293: 0018984: Alunite
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Properties and hydration of blended cements with mineral ...
Alunite, K2SO4 Al2(SO4)3 4Al(OH)3 is a mineral not soluble in water in its original form. It was formed by hydrothermal alteration of tuff. Therefore it contains approximately 50% SiO2.
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(PDF) Single-crystal elastic properties of alunite, KAl3 ...
Elastic constants of tourmaline crystals of known chemical composition have been measured by the ultrasonic phase‐comparison method. The values in 1012 dyn/cm2 are C11=3.050, C33=1.764, C44=0 ...
Read More
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SPECTRAL PROPERTIES OF ALUNITE-KAOLINITE
2019-1-10 µm remains present even at 75 wt.% alunite, although it is influenced by the alunite absorption at 1.427 µm. Conversely, the 1.427 µm alunite absorption readily disappears with decreasing alunite abundance, becom-ing a shoulder at 50 wt. % alunite, and disappearing Fig. 1: VNIR reflectance spectra of alunite (blue) and ka-
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The visible and infrared spectral properties of jarosite ...
The visible and infrared spectral properties of two natural jarosite minerals and a suite of synthetic jarosites and alunite samples are described here. The fundamental stretching and bending vibrations observed in the infrared region for SO 4 2− and OH − are compared with the near-infrared overtones and combinations of these vibrations.
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Minerals Free Full-Text Mineralogical Study of the ...
Mineral-chemical analyses reveal significant variance in the SiO2, F, and Cl content of zunyite. Alunite supergroup minerals display a wide compositional range corresponding to members of the alunite, beudantite, and plumbogummite subgroups. Diaspore displays an almost stoichiometric composition.
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安树青_百度百科
2008-9-1 安树青论文. 1、An SQ et al. Forest plant communities of Baohua Mountains, eastern China JOURNAL OF VEGETATION SCIENCE 10: 653-658 OCT 2001. 2、An SQ et al. Composutional change and vegetation degradation of raprian forests of Altai Plain, NW China PLANT ECOLOGY 164 (1):75-84 FEB 2003. 3、An SQ et al.
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alunite Mineral, Description, Uses, Facts Britannica
alunite, also called Alum Stone, a widespread rock-forming sulfate mineral that occupies pockets or seams in volcanic rocks such as rhyolites, trachytes, and andesites, where it presumably formed through their chemical reaction with escaping sulfurous vapours. It
Read More
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Properties and hydration of blended cements with mineral ...
Alunite, K2SO4 Al2(SO4)3 4Al(OH)3 is a mineral not soluble in water in its original form. It was formed by hydrothermal alteration of tuff. Therefore it contains approximately 50% SiO2.
Read More
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Single-crystal elastic properties of alunite, KAl3(SO4)2 ...
2006-8-25 Significant difference in the values of C 11 and C 33 are found in some other minerals with the same symmetry as alunite, e.g., tourmaline C 11 /C 33 ∼1.7 (Ozkan 1979) and brucite C 11 /C 33 ∼3.4 (Xia et al. 1998). In terms of elastic properties, the trigonal structure of alunite exhibits a pseudo-hexagonal behavior at ambient conditions.
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SPECTRAL PROPERTIES OF ALUNITE-KAOLINITE
2019-1-10 µm remains present even at 75 wt.% alunite, although it is influenced by the alunite absorption at 1.427 µm. Conversely, the 1.427 µm alunite absorption readily disappears with decreasing alunite abundance, becom-ing a shoulder at 50 wt. % alunite, and disappearing Fig. 1: VNIR reflectance spectra of alunite (blue) and ka-
Read More
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(PDF) Single-crystal elastic properties of alunite, KAl3 ...
Elastic constants of tourmaline crystals of known chemical composition have been measured by the ultrasonic phase‐comparison method. The values in 1012 dyn/cm2 are C11=3.050, C33=1.764, C44=0 ...
Read More
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Alunite(K) Thermoddem
Summary and Critique of the Thermodynamic Properties of Rock Forming Minerals: Amer. J. Sci., 278A, 229 pp. Reaction properties Alunite(K) + 6H + ⇌ 3Al + 3 + K + + 2SO 4 - 2 + 6H 2 O
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Alunite-jarosite crystallography, thermodynamics, and ...
The alunite supergroup consists of more than 40 mineral species that have in common the general formula DG3(TO4)2(OH,H2O)6. The D sites are occupied by monovalent (e.g. K, Na, NH4, Ag, Tl, H3O), divalent (e.g. Ca, Sr, Ba, Pb), trivalent (e.g. Bi, REE) or more rarely quadrivalent (Th) ions; G is Al or Fe3+ or rarely Ga or V; T is S6+, As5+, or P5+, and may include subordinate amounts of Cr6+ or ...
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The visible and infrared spectral properties of jarosite ...
The visible and infrared spectral properties of two natural jarosite minerals and a suite of synthetic jarosites and alunite samples are described here. The fundamental stretching and bending vibrations observed in the infrared region for SO 4 2− and OH − are compared with the near-infrared overtones and combinations of these vibrations.
Read More
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Physical Properties Of Minerals (Bauxite)
2021-4-15 Clay minerals, alunite, anorthosite, powerhouse ash, and shale might be accustomed manufacture aluminum oxide however at higher prices, victimization totally different processes. carbide and artificial mineral square measure generally employed
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Minerals An Open Access Journal from MDPI
Minerals is an international, peer-reviewed, open access journal of natural mineral systems, mineral resources, mining, and mineral processing. Minerals is published monthly online by MDPI.. Open Access — free for readers, with article processing charges (APC) paid by authors or their institutions.; High Visibility: indexed within Scopus, SCIE (Web of Science), GeoRef, CaPlus / SciFinder ...
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