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	Cuprite - LoveToKnow 1911
		The colour of the mineral is cochineal-red, and the lustre brilliant and adamantine to submetallic in character; crystals are often translucent, and show a crimsonred colour by transmitted light.
		Cuprite occurs in the upper part of copper-bearing lodes, and is of secondary origin, having been produced by the alteration of copper sulphides.
		Small crystals of cuprite, together with malachite, azurite and cerussite, are sometimes found encrusting ancient objects of copper and bronze, such as celts and Roman coins, which have for long periods remained buried in the soil.
	www.1911encyclopedia.org /Cuprite (0 words)

	cuprite.htm
		Description: Cuprite generally forms from the alteration of preexisting copper minerals during weathering or interaction with groundwater in the supergene and oxidized zones over copper deposits.
		DOUGLAS COUNTY: Cuprite is found with native copper and malachite at the Weyerhauser Mine, NW SE Sec.
		POLK COUNTY: Massive cuprite associated with chalcocite and malachite is found in quartz veins in the north quarry of the Dresser Trap Rock Company property at Dresser at Sec.
	www.uwrf.edu /~wc01/cuprite.htm (0 words)

	Cuprite - Search Results - MSN Encarta
		Cuprite, cuprous oxide (Cu O), sometimes known as ruby copper or red copper ore, an important copper ore, found in long crystals, in fine-grained...
		Cuprite is a mineral composed of copper(I) oxide Cu 2 O, and is a minor ore of copper.
		Cuprite has been a major ore of copper and is still mined in many places around the world.
	encarta.msn.com /Cuprite.html (160 words)

	JAIC 1990, Volume 29, Number 2, Article 7 (pp. 193 to 206)
		Cuprite can be formed as a thin layer adjacent to copper if cuprous chloride and copper are mixed together and regularly moistened with water, but this is not the principal reaction.
		The cuprite that formed over the cuprous chloride not only acts as a diffusion barrier that reduces the loss of dissolved copper ions into the outer zone but also as a bipolar electrode, with an anodic reaction taking place on the inner surface of the cuprite and a cathodic reaction occurring on the outer surface.
		It is interesting that the cuprite in experiment 8 is attacked during the reaction with cuprous chloride and the red color of cuprite gradually changes, the whole mass becoming pale green.
	aic.stanford.edu /jaic/articles/jaic29-02-007_3.html (2962 words)

	CONNOISSEUR'S Choice: Cuprite, Mashamba West Mine, Shaba, Democratic Republic of Congo, and Red Dome Mine, Queensland, ... (Site not responding. Last check: )
		Cuprite is relatively soft with a Mohs hardness of 3.5--4, and it is dense, with a specific gravity of 6.15.
		Cuprite is an unusually widespread mineral, occurring in varying amounts in the oxidized portions of deposits containing primary copper minerals at depth.
		According to Genth (1891), "cuprite in acicular and capillary crystals (so-called chalcotrichite) was formerly found in beautiful specimens" at the McGinn mine in Mecklenburg County and at several of the copper mines in Guilford County, North Carolina.
	www.findarticles.com /p/articles/mi_m0GDX/is_4_76/ai_76549853 (910 words)

	Cuprite (Site not responding. Last check: )
		Cuprite, or Copper Pyrite, seems at first glance to be an opaque, dull gray, metallic crystal, but if you hold a piece to the light it reveals a deep, translucent blood red color.
		Cuprite is a powerful ally in any magic of self discovery and seems to enhance the power available during meditation, contemplation and prayer.
		Cuprite is said to help anyone brave enough to seek inner knowledge, understand their deepest feelings and discover their true spiritual nature.
	www.snazzdragon.com /main/caz/cup.php (281 words)

	Cuprite
		Cuprite is born when copper is exposed to oxygen.
		Cuprite is a catalyst for increased oxygenation and pranic forces in the body.
		Cuprite is relatively soft and would not be durable as jewelry.
	www.thecrystalcavern.net /AYCUPRITE.html (54 words)

	CONNOISSEUR'S Choice: Cuprite, Mashamba West Mine, Shaba, Democratic Republic of Congo, and Red Dome Mine, Queensland, ... (Site not responding. Last check: )
		Cuprite is relatively soft with a Mohs hardness of 3.5--4, and it is dense, with a specific gravity of 6.15.
		Cuprite is an unusually widespread mineral, occurring in varying amounts in the oxidized portions of deposits containing primary copper minerals at depth.
		According to Genth (1891), "cuprite in acicular and capillary crystals (so-called chalcotrichite) was formerly found in beautiful specimens" at the McGinn mine in Mecklenburg County and at several of the copper mines in Guilford County, North Carolina.
	findarticles.com /p/articles/mi_m0GDX/is_4_76/ai_76549853 (892 words)

	Cuprite, rock, crystal, mineral, gem stone, birth stones - mineralgallery
		Crystals of cuprite are sometimes altered or partially altered to malachite and rarely copper.
		Cuprite has been a major ore of copper and is still mined in many places around the world.
		Of all the copper ores except for native copper, cuprite gives the greatest yield of copper per molecule since there is only one oxygen atom to every two copper atoms.
	www.mineralgallery.co.za /cuprite.htm (0 words)

	Geology
		The Cuprite Mining District is located in west-central Nevada, and is one of a number of alteration centers explored for precious metals.
		Cuprite Mining District Nevada displayed using ASTER SWIR bands 4-6-8 as a RGB composite.
		To reduce the crosstalk artifacts, a spectrum of Stonewall Playa was used as a bright target, resampled to the ASTER wavelengths, and divided into the SWIR reflectance data.
	asterweb.jpl.nasa.gov /content/03_data/05_Application_Examples/geology/default.HTM (416 words)

	Cuprite Information Center - is the economic value of cuprite high or low
		Cuprite is a mineral composed of where is the mineral cuprite found copper(I) oxide cuprite Cu O, and is an important ore of copper.
		Its dark crystals with is the economic value of cuprite high or low red internal cuprite pictures reflections are in the isometric system, appearing as cubic, octahedral, or dodecahedral forms, uses of cuprite or in combinations, with a deep red color.
		cuprite hills In spite of its nice color it is rarely used for jewelry because of its low hardness of 3.5 -4.
	www.scipeeps.com /Sci-Chemistry_Topics_Co_-_D/Cuprite.html (114 words)

	Fibrous cuprite growth
		The problem of reduction of cuprite to copper metal is an important one, because in some types of whiskers native copper occurs naturally with cuprite, as discussed in a later section.
		Unlike the diffraction patterns of Figure 4, in which Cu crystals produced by reduction of cuprite in the TEM are randomly or imperfectly oriented with respect to the cuprite, the diffraction pattern in Figure 13b demonstrates an almost rigorous orientation relationship between the Cu and cuprite structures: the a-axes of the two phases are parallel.
		It is possible, then, that the individual cuprite and Cu metal composite ribbons that were observed originated as double-ribbon whiskers and have since pulled apart, whereas the pure cuprite whiskers initially grew as individual ribbons.
	www.minsocam.org /msa/collectors_corner/arc/cuprite.htm (0 words)

	Remote Sensing Tutorial Page 13-10
		Cuprite was selected in part because previous field work at ascertained the variety of alteration minerals at that site, as shown in the map below.
		This map is an exciting example of high resolution hyperspectral data to reveal a notable diversity of minerals in alteration zones and fresh rock, as well, at a detail that could require years of field mapping to duplicate.
		In the image pair below, the left shows a part of the Cuprite scene at 2.3 x 7 m resolution; the right, obtained from a higher altitude, is the same area at 18 x 18 m resolution.
	rst.gsfc.nasa.gov /Sect13/Sect13_10.html (1738 words)

	* Cuprite- (Jewelry): Definition
		Cuprite has been a major ore of copper and is still mined in many places around the world.
		Mineral Notes: Cuprite typically occurs in upper oxidised parts of Copper deposits, usually found with native Copper and other secondary minerals including Malachite and Azurite.
		Associated minerals are cuprite, chalcocite, bornite, epidote, calcite, chlorite and zeolites.
	en.mimi.hu /jewelry/cuprite.html (370 words)

	Gem Hut - Cuprite Gemstones
		Commonly called "ruby copper", cuprite is a secondary ore of copper that occasionally forms attractive ruby-like transparent crystals.
		Cuprite has a high refractive index which is even greater than diamond.
		Because of this, cuprite has a semi-metallic lustre and in the right lighting can be confused with hematite.
	www.gemhut.com /cuprite.htm (0 words)

	Gypsum on Cuprite
		It usually occurs in the upper parts of copper deposits and is usually associated with native copper.
		Cuprite's dark crystals often show internal reflections of deep red inside the almost fl crystals.
		Underneath the specimen, amongst the earthy Cuprite are streaks of green Malachite.
	www.wildaboutrocks.com /prod1848.htm (0 words)

	JAIC 1992, Volume 31, Number 3, Article 7 (pp. 355 to 366)
		The first product of copper corrosion, cuprite, forms epitaxially as a product of the direct reaction of copper with dissolved O2 or with water molecules (North and Pryor 1970).
		A direct solid-state transformation of cuprite to malachite is possible, while a transformation to a hydroxychloride mineral would require dissolution and precipitation (fig.
		If conditions at a copper surface permit precipitation of nantokite under the cuprite layer, the alloy becomes vulnerable to bronze disease (Scott 1990a) or type 1 pitting corrosion (Lucey 1967), depending on mass transport conditions.
	aic.stanford.edu /jaic/articles/jaic31-03-007_5.html (947 words)

	Hyperspectral Signatures and Resolution
		Several images of the Cuprite, Nevada, USA, area acquired with a variety of spectral and spatial resolutions serve as the basis for discussions on the effect of these parameters on mineralogic mapping using remote sensing techniques.
		The Cuprite TM data were acquired on 4 October 1984 and are in the public domain.
		This dataset is Cuprite GEOSCAN imagery with approximately 60 nm Resolution with 44 nm sampling converted to apparent reflectance using a flat field correction.
	www.ltid.inpe.br /tutorial/tut11.htm (3386 words)

	The Metropolitan Museum of Art - Works of Art: Objects Conservation
		In open-air environments this initial growth of cuprite (Cu O) over tenorite (CuO) is usually obscured by green or blue secondary corrosion products, for the most part carbonates, sulfates, and chlorides.
		Facilitated by these electrolytes, the oxygen present in aerated burial environments migrates very slowly through the superficial oxide layer into the metal, affecting first the areas most susceptible to deterioration, which are usually the grain boundaries.
		Recipes designed to produce green and blue corrosion products generally are solutions of copper salts, and in such cases the patina results from the deposition of these salts on the metal surface and their subsequent conversion to more stable, hydrated sulfate, nitrate, or chloride species.
	www.metmuseum.org /Works_Of_Art/objects_conservation/spring_2003/patina.asp?printFlag=1 (798 words)

	Newswise
		The images map the charge density of non-ionic bonds in Cu2O and thus provide the first experimental verification of the controversial hypothesis that both ionic and covalent bonding occurs in the material.
		A radical extension to this simple picture of chemical bonding theory was proposed some years ago, and it has finally been shown to be correct.
		Though physicists have long argued that the interesting properties of metal oxides indicate the presence of bonding that was not ionic in the materials, finding direct evidence of metal-to-metal bonding in cuprite was still somewhat of a scientific surprise.
	www.newswise.com /articles/view/?id=CUPRITE.ASL (689 words)

	CUPRITE - Encyclopedia Britannica - CUPRITE - JCSM's Study Center (Site not responding. Last check: )
		The etching figures do not, however, conform to this lower degree of symmetry, nor do crystals of cuprite rotate the plane of polarization of plane-polarized light.
		The colour of the mineral is cochineal-red, and the lustre brilliant and adamantine to sub-metallic in character; crystals are often translucent, and show a crimson-red colour by transmitted light.
		Ziegelerz) is a soft earthy variety of a brick-red to brownish-red colour; it contains ad-mixed limonite, and has been formed by the alteration of chalcopyrite (copper and iron sulphide).
	www.jcsm.org /StudyCenter/Encyclopedia_Britannica/CRE_DAH/CUPRITE.html (630 words)

	Cuprite AVIRIS Ground Truthing
		Mineral abundance maps of 18 minerals were made of the Cuprite Mining District using 1990 AVIRIS data and the Multiple Spectral Feature Mapping Algorithm (MSFMA) as discussed in Clark et al.
		Cuprite consists of two acid-sulfate hydrothermal alteration centers straddling highway 95 in southwestern Nevada, with alteration involving Tertiary volcanic host rocks in the eastern center and Cambrian metasedimentary host rocks in the western center.
		Cuprite spectral mineral abundance maps of the area show two elliptical zonation patterns.
	speclab.cr.usgs.gov /PAPERS/cuprite.gr.truth.1992/swayze.1992.html (0 words)

	cuprite crisocolla
		La Cuprite si combina spesso con la Crisocolla formando una pietra che può venire usata per molti usi.
		La Cuprite Crisocolla è anche un buon amico per quegli uomini che stanno tentando di ammorbidire le tendenze aggressive con il potenziamento dei sentimenti del cuore.
		La Cuprite in questa combinazione ci permette la connessione con la Terra, e proprio con il "Cuore Fiero" della Terra che è un'importante sorgente di energia per i "Lavoratori della Luce".
	www.manipura.it /Chakra_2/cuprite_crisox.html (618 words)

	Seeing quantum mechanics: Image of orbitals confirms bonding hypothesis
		The images map the charge density of non-ionic bonds in Cu2O and thus provide the first experimental verification of the controversial hypothesis that both ionic and covalent bonding occurs in the material.
		A radical extension to this simple picture of chemical bonding theory was proposed some years ago, and it has finally been shown to be correct.
		Though physicists have long argued that the interesting properties of metal oxides indicate the presence of bonding that was not ionic in the materials, finding direct evidence of metal-to-metal bonding in cuprite was still somewhat of a scientific surprise.
	www.eurekalert.org /pub_releases/1999-09/ASUC-SqmI-010999.php (625 words)

	Quantitative reflectance spectroscopy of buddingtonite from the Cuprite mining district, Nevada
		In this study over 200 samples from Cuprite, Nevada, were evaluated by X ray diffraction, chemical analysis, scanning electron microscopy, and SWIR reflectance spectroscopy with the objective of developing a quantitative remote-sensing technique for rapid determination of the amount of ammonium or buddingtonite present, and its distribution across the site.
		We hypothesized that the concentration of ammonium in each sample is related to the size and shape of the ammonium absorption bands and tested this hypothesis for samples of relatively pure buddingtonite.
		We found that the band depth of the 2.12-μm NH feature is linearly related to the NH concentration for the Cuprite buddingtonite, and that the relationship is approximately exponential for a larger range of NH concentrations.
	www.agu.org /pubs/crossref/1994.../93JB02975.shtml (357 words)

	ipedia.com: Cuprite Article (Site not responding. Last check: )
		Cuprite is a mineral composed of copper oxide Cu2O, and is an important ore of copper.
		Its dark crystals with red internal reflections are in the isometric system, appearing as cubic, octahedral, or d...
		Its dark crystals with red internal reflections are in the isometric system, appearing as cubic, octahedral, or dodecahedral shapes, or in combinations, with a dark red color.
	www.ipedia.com /cuprite.html (141 words)

	Scientific American: Observing Orbitals
		These charge density maps of non-ionic bonds in cuprite reveal a dumbbell, with a doughnut and three petals around its middle, where a copper ion resides--a configuration predicted for a s-d
		To make a sharp picture of the covalent bonds between copper and oxygen, the group manipulated the charge density map by first moving all ions to the back of the map and then subtracting the background.
		CUPRITE-- a crystal of copper and oxygen atoms-- gave researchers their first glimpse at electron orbitals.
	sciam.com /print_version.cfm?articleID=000D0A0C-36CC-1C75-9B81809EC588EF21 (773 words)

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