Most beds are almost monomictic, comprising quartz-feldspar porphyry clasts, whereas some other beds are highly heterogeneous. |
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Finally the hardest stones such as granite and porphyry require the most tempered steel tools. |
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In 2000, fifty porphyry deposits had been identified in Chile, with reserves of 400 million tons of copper! |
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This rare work of porphyry, limestone, serpentine and onyx is unique north of the Alps. |
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In the baths of porphyry and verd-antique you had waters cold or sulphurous at will. |
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They also noted that much kaolin is in or near decomposed porphyry bodies that overlie the largest ore shoots in the Leadville Dolomite. |
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During this time, many of the district's steeply dipping, northeast-trending faults were intruded by narrow, granodiorite porphyry dikes. |
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Other possible occurrences include porphyry copper deposits that contain enargite at depth, such as Chuquicamata, Chile. |
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Some of the finest cuprite specimens ever found have come from the oxidized zones of several of Arizona's porphyry copper and related deposits. |
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This is particularly well known to collectors familiar with porphyry copper deposits of Arizona, New Mexico, and Utah. |
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The fault places massive fractured greenstones over relatively undeformed feldspar andesite porphyry. |
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The entrance foyer of the Rand Club is dominated by huge simulated porphyry columns and a grand staircase leading to a colonnaded gallery. |
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A porphyry obscures the contact between the Cross Slieve Group and the Red Arch Formation. |
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Parts of the feldspar porphyry are hydrothermally altered, and a small hydrothermal breccia or diatreme cuts the microgranite. |
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The ore is associated with plagiogranite porphyry of Mesozoic age. |
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At least two Eocene feldspar porphyry dykes or sills intrude Tsa da Glisza, and appear to have followed the same planes of weakness as the aplite dykes. |
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The reference to emerald stone probably indicates color rather than medium, which suggests that the statue was carved of green basalt, granite, porphyry, or serpentine. |
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Although closely associated with plutonic igneous rocks, porphyry mineralization commonly encompasses large volumes of the surrounding host rocks to the intrusion. |
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In both holes, the porphyry contains few quartz veins and is relatively homogenously mineralized with 1 to 3 percent disseminated pyrite. |
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Mineralization in the F zone is hosted by an apophasis of the porphyry intrusion that reaches surface. |
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Alternative of the opus sectile realized with the tesserae geometrical ones with very hard materials like porphyry. |
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The sedimentary beds are composed mainly of poorly sorted subangular to rounded clasts of felsite and rhyolite porphyry that are typically a red color. |
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In the late 1980's emphasis shifted towards the gold-bearing alkalic porphyry systems. |
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These deformation zones are commonly occupied by intrusive units including syenite, quartz feldspar porphyry, gabbro and lamprophyre. |
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The porphyry, which grades into granitic rocks at depth, and associated breccias were emplaced at the pre-existing caldera margin. |
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The fastigium was altered in the early eighteenth century by the substitution of panels of ornamental motifs for porphyry panels in the smaller squares. |
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Late, coarse-grained, quartz-feldspar-muscovite veins cut and hematize the porphyry in the Canadian Malartic and Sladen Malartic mines. |
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This outcrop contained an associated late phase of finer-grained feldspar-quartz porphyry, very similar to the outcrop south of the showing. |
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For instance, the porphyry in this picture is not comparable with the good quality porphyry of the Quenast quarry in Belgium. |
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The Carroll showing and the porphyry are found just east of the Miramichi-Tobique contact. |
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The principal outputs will be new syntheses for Pb-Zn and for porphyry base metal deposits in the southern Cordillera. |
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Mineralization is hosted by Late Cretaceous andesite intruded by porphyry stocks and dikes. |
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White marble with serpentine and porphyry inlay. |
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In this porphyry, the gold mineralization is contained in quartz-ankerite-arsenopyrite veins, in a geological environment similar to the CMX zone located South of Montclerg and in several other deposits in the area. |
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For the fitting of many calibrated or uncalibrated natural stones susceptible to discoloration, e.g. granite, porphyry, quartzite, solnhofer and marble. |
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The intercept correlates with a zone of chalcopyrite and bornite mineralisation in the porphyry and surrounding metasediment. |
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The East Zone target mineralization is related to andesite-diorite porphyry intruded into a basement gneiss and limestone cap on top. |
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They have been formed by the dissemination of copper minerals in the crushed or fractured periphery of intrusive igneous bodies of such granitic rocks as quartz monzonite and diorite porphyry. |
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From 495m to end of hole at 500m a weakly altered and mineralized, late plagioclase hornblende diorite porphyry was intersected. |
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The copper-gold mineralization of the Chuchi deposit is centred on a cluster of plagioclase porphyry monzonite stocks, dykes and sills. |
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The property is underlain by two monzonitic porphyry intrusive centers approximately 1000 meters apart. |
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The different zones are strong propylite, argillic, sericitic and potassic alteration hosted in a biotite, feldspar quartz porphyry. |
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The Amphi Mine is located 2.0 kilometres northwest of the center of the Canadian Malartic deposit and the porphyry intrusion formed the footwall of the mined-out ore body. |
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The presence of feldspar porphyry sills, which contain increased concentrations of K-feldspar minerals, would also show higher than normal radioactivity on the gamma-ray logs. |
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The Jeffrey Zone is a gold-mineralized environment located along the southern extremity of the CHL porphyry, approximately 3.5 km east of the center of the Canadian Malartic deposit, currently under development by Osisko. |
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A boyhood spent on the cliffs at Kirkcaple had made me a bold cragsman, and the porphyry of the Rooirand clearly gave excellent holds. |
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In 1861, Napoleon's remains were entombed in a porphyry stone sarcophagus in the crypt under the dome at Les Invalides. |
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Normally, a porphyry sill forms the footwall to the Main Manto. |
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This is interpreted as the intrusive emplacement of the quartz porphyry during the final stage of the belt development. |
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Sand and gritting obtained from processing the porphyry are used for special types of concrete and mortar which must be of exceptional hardness, roughness and resistance. |
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The porphyry mineralization further benefited from the dry climate that let them largely out of the disturbing actions of meteoric water. |
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The Salto de Albi porphyry copper system is located within the Albi ravine. |
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Eight busts of Roman emperors in porphyry and marble adorn the gallery, and eight statues, seven of them Antique: Bacchus, Venus, Modesty, Mercury, the Venus of Troas, Urania, Nemesis and Diana. |
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Supergene enrichment hosts the highest copper grades in the Constancia porphyry system, dominantly as chalcocite mineralisation. |
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The bedrock in the area is dominated by porphyritic, pillowed and locally magnetic basalts, cut by diorite intrusions, felsic porphyry intrusions, and a swarm of NE-trending diabase dykes. |
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Gold is associated with a north-northeast trending pyritic quartz felsite porphyry. |
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The Copper Canyon deposit is classified as a gold-rich, copper-gold-silver alkalic porphyry style system. |
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From 88m to the current depth of 493m potassic altered and argillic overprinted, mineralized polymict breccia, diorite porphyry and diorite breccia was intersected. |
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Therefore, it is important to study the Suursaari quartz porphyry for all possible trace elements in order to assess the calculated geothermometry data. |
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Moreover, an ancient diamond drill hole drilled in 1959 intersected a section of pyritised porphyry which returned anomalous gold values over a core length of 23 meters. |
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Towards the Andes, the shingle gives place to porphyry, granite, and basalt lavas, animal life becomes more abundant and vegetation more luxuriant. |
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A granitic rock with a porphyritic texture is known as a granite porphyry. |
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Laminated volcaniclastic claystones and siltstones of the Esk Pike Formation form the upper reaches, crossed by an intrusion of andesite and hybridized andesite porphyry. |
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Prospect pits and minor workings mark the Huichapa vein zone and its accompanying aphanite porphyry dike for approximately 1500 meters on surface. |
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The Salto de Albi porphyry prospect is an oval shaped, Tertiary age intrusive, with associated chalcopyrite-bornite mineralization and intense potassic alteration. |
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A locally sulfidic laccolith intrusive of quartz-eye porphyry of the Caetano Tuff underlies the skarns, and this may have been the source of the IP anomaly. |
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These alloys found important applications in industry that resulted in a great demand for the rhenium produced from the molybdenite fraction of porphyry copper ores. |
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