Our origin of porphery copper deposits

GEOPHYSICAL CASE HISTORY OF NORTH SILVER BELL, PIMA …

the Geology of the Porphyry Copper Deposits, Southwestern North Americafl. This article, an earlier article by Richard and Courtright (1966) on the Silver Bell district in fiGeology of

Exploration of Porphyry Copper Deposits

Exploration of Porphyry Copper Deposits ... just put that comment in context although 65 million years sounds a long time ago if the earth's history was compressed into the equivalent of a single year the tertiary would occupy just the last five days of …

Porphyry (geology) - Wikipedia

The term porphyry is also used for a mineral deposit called a "copper porphyry". The different stages of cooling that create porphyritic textures in intrusive and hypabyssal porphyritic rocks also lead to a separation of dissolved metals into distinct zones.

porphyry deposit | Encyclopedia.com

1. Porphyry copper occurs as large copper deposits centred around stocks of intermediate to acid, porphyritic, igneous rocks. Most occur in Mesozoic and Tertiary orogenic belts. They show concentric zones of minerals; for example at Bingham, Utah, there is an inner zone of Cu/Mo and an outer zone of ...

Origin of illites at dexing porphyry copper deposit ...

such as porphyry copper deposit, illite could be used to constrain the forming condition of the en- vironment and to serve as an indicator of fluid nature, water/rock ratio, mineralization and alter- …

Formation of Porphyry Copper Deposits

Stephen J. Reynolds, Dept. of Geology, Arizona State University

The Great Porphyry Copper Deposits of Arizona | …

The porphyry copper deposits of Arizona are located in what is known as the 'basin and range' physiographic province. This region is characterized by a series of fault bound blocks that have risen and fallen creating a distinctive valley-mountain range topography.

Origin of illites at dexing porphyry copper deposit ...

Abstract. According to differences in features of illites including spatial distribution, crystallinity index, volume of swelling layer, polytype and relationship between its index and copper grade, two typical kinds of illite can be classified within the Tongchang porphyry copper deposit, Dexing County, East China.

Preliminary Model of Porphyry Copper Deposits - …

Copper is the primary commodity of economic interest in most porphyry copper deposits, although some deposits with low to very low copper grades are mined principally for their gold (for example, Çopler, Turkey) and(or) molybdenum (for example,

GEOLOGY AND EVOLUTION OF THE COPPER FLAT PORPHYRY …

The Copper Flat porphyry copper deposit in the northern part of the Hillsboro district was discovered in 1975 (Castellano et al., 1977; Dunn, 1982, 1984), although alteration and mineralization in the area suggested to earlier geologists that a porphyry copper deposit should occur in …

Porphyry copper deposit - WikiVisually

Porphyry copper deposits are copper orebodies that are formed from hydrothermal fluids that originate from a voluminous magma chamber several kilometers below the deposit itself. ... ^ Solomon, M., Subduction, arc reversal, and the origin of porphyry copper-gold deposits in island arcs. Geology, 1990. 18: p. 630-633.

Porphyry copper deposit | Wiki | Everipedia

Porphyry copper deposits are copper orebodies that are formed from hydrothermal fluids that originate from a voluminous magma chamber several kilometers below the deposit itself. Predating or associated with those fluids are vertical dikes of porphyritic intrusive rocks from which this deposit type derives its …

Development of a Copper Porphyry deposit - YouTube

May 31, 2015· Development of a Copper Porphyry Porphyry copper deposits are copper orebodies that are formed from hydrothermal fluids that originate from a voluminous magma chamber several kilometers below the ...

ORIGIN OF ORE TEXTURES: PORPHYRY COPPER DEPOSITS …

origin of ore textures: porphyry copper deposits LUFKIN, John L., 995 Moss Street, Golden, CO 80401, [email protected] and CANTORIN, Maritza, University of San Marcos, Lima, Peru By last count, there are more than 100 porphyry copper deposits in North America, but there is scant information on textures of ore minerals in this type of deposit ...

Porphyry copper deposit - The Full Wiki

From Wikipedia, the free encyclopedia. Porphyry copper deposits are copper orebodies which are associated with porphyritic intrusive rocks and the fluids that accompany them during the transition and cooling from magma to rock. Circulating surface water or …

porphyry deposit | Encyclopedia.com

1. Porphyry copper occurs as large copper deposits centred around stocks of intermediate to acid, porphyritic, igneous rocks. Most occur in Mesozoic and Tertiary orogenic belts. They show concentric zones of minerals; for example at Bingham, Utah, there is …

What is a Porphyry Copper Deposit?

porphyry copper deposits were the first type of metallic mineral deposit to be exploited by large-scale, bulk tonnage, open pit mining methods. Economies of scale and advances in technology have made it possible to profitably mine these deposits despite their relatively low ore grades.

Porphyry copper deposit | Revolvy

Porphyry copper deposits are copper orebodies that are formed from hydrothermal fluids that originate from a voluminous magma chamber several kilometers below the deposit itself. Predating or associated with those fluids are vertical dikes of porphyritic intrusive rocks from which this deposit type derives its …

What is a Porphyry Copper Deposit? by David F. Briggs on ...

porphyry copper deposits were the first type of metallic mineral deposit to be exploited by large- scale, bulk tonnage, open pit mining methods. Economies of scale and advances in technology have

porphyry copper deposit at El Salvador, Chile | Economic ...

Copper was mostly removed from the sericitic capping, but iron, molybdenum, and gold were relatively immobile during supergene leaching.Interpretation of the space-time patterns and relations of the mineralization, alteration, volcanism, and intrusion allows reconstruction of the depositional environments of the El Salvador porphyry copper deposit.

Plate Tectonic Model for the Origin of Porphyry Copper ...

A Plate Tectonic Model for the Origin of Porphyry Copper Deposits ... though speculative, model for the origin and space-time distribution of porphyry copper and porphyry molybdenum deposits.Porphyry ore deposits, occurring in the western Americas, southwest Pacific and Alpide orogenic belts, are thought to constitute a …

Porphyry Copper Deposits of the American Cordillera

Porphyry copper deposits in the American southwest ... The history of modem knowledge and ideas concerning the regional association of ores with crust commences with Butler (1933), who noted the distribution of porphyry districts in a belt around the Colorado Plateaus. Under the influence of work by

Geology of Porphyry Copper Deposits

When it comes to porphyry deposits there are a number of variations on a theme and the deposits can be copper only, they can be copper gold, copper molybdenum or molybdenum only but regardless of the metal mix the process of deposit …

Porphyry (geology) - Wikipedia

…is a class known as porphyry copper deposits, so called because they are invariably associated with igneous intrusives that are porphyritic (meaning the rock is a mixture of coarse and fine mineral grains).

A Plate Tectonic Model for the Origin of Porphyry …

Economic Geology Vol. 67, 1972, pp. 184-197 A Plate Tectonic Model for the Origin Porphyry Copper Deposits RICHARD H. SILLITOE Abstract The theory of lithosphere plate tectonics, embodying the concepts of sea-floor spread-

Mantle origin of the Dexing porphyry copper …

The Dexing porphyry copper deposit, part of the circum- Pacific porphyry copper ore belt (Figure 1A), is the largest porphyry copper deposit in China and contains

porphyry | Definition of porphyry in English by Oxford ...

'This is particularly well known to collectors familiar with porphyry copper deposits of Arizona, New Mexico, and Utah.' 'Some of the finest cuprite specimens ever found have come from the oxidized zones of several of Arizona's porphyry copper and related deposits.'

Mineral deposit - Hydrothermal solution | Britannica.com

Porphyry deposits. Among the most distinctive hydrothermal deposits is a class known as porphyry copper deposits, so called because they are invariably associated with igneous intrusives that are porphyritic (meaning the rock is a mixture of coarse and fine mineral grains).Porphyry copper deposits (and their close relatives, porphyry molybdenum deposits…

Everything You Need to Know About Copper Porphyries ...

Some deposits have such high concentrations of gold that they may be considered gold deposits rather than copper deposits. Others have barely any gold at all but may have plenty of molybdenum. Large Size, Low Grade – Porphyries typically have 100 million to 5 billion tonnes of ore with a lower grade (0.2% to >1% copper).

Porphyry Deposits: The World's Largest Source of Copper ...

Porphyry copper deposits are generally composed of a "plug-like" igneous intrusion – a large magma body that is emplaced beneath a volcanic system. On average these deposits can have a vertical and horizontal extent of 1-2 km and can range from tens of millions to a billion+ tons in size.