نتایج جستجو برای: granite deposit
تعداد نتایج: 21110 فیلتر نتایج به سال:
The Sayashk tin (Sn) deposit is located within the southern part of Eastern Junggar orogenic belt in Xinjiang Province and forms Kalamaili alkaline granite belt. There are many Sn polymetallic deposits area. To constrain age, genesis, tectonic setting East region, we conducted a bulk-rock geochemical analysis porphyry (SR1) medium- to fine-grained (SR2) hosts deposit, LA-ICP-MS zircon U–Pb dati...
In this presentation questions are raised about a melt-restite unmixing model proposed by Barton and Sidle (1994) for the myrmekite-bearing Waldoboro granite complex along the southeastern coast of Maine (USA). This complex consists mostly of granite/granodiorite gneiss and granite, but smaller masses of quartz diorite, aplite, pegmatite, leucogranite, tourmaline granite, and granite porphyry o...
Sorkheh Dizaj apatite - iron oxide deposit is located in southeast of Zanjan, within the Tarom subzone of Western Alborz - Azarbaijan structural zone. The oldest units in the area are Eocene trachyte, trachyandesite, olivine basalt and volcanoclastic brecciated tuff and lapilli tuff intruded by a quartz-monzonite, monzonite and granite subvolcanic pluton of Late Eocene - Early Oligocene age. Th...
This paper provides preliminary data on the use of three different mechanical procedures to remove lichen Diploschistes scruposus and a gypsum black crust from an ornamental granite. The methods used were wet sandblasting (Hydrogommage®), dry (IBIX®) dry-ice blasting. In addition, lichens also removed by scraping with scalpel. cleaning efficacy undesirable effects granite evaluated stereomicros...
Emanation of radon ( 222 Rn) from granite countertops was measured using continuous and integrating radon monitors, and in air collected from encapsulated pieces of the countertops. A majority of the countertops emitted a measurable amount of radon. Although the granites contained the precursors, no thoron ( 220 Rn) emanation was detected. Gamma-ray spectroscopy was used to determine amounts of...
On April 26, 1996, Public Law 104-134 was Chart 1 .-Payment volume, by type of disbursement, fiscal year 1997 enacted, requiring all Federal payments except tax refunds be issued electronically by January 2, 1999, thus beginning a new era in electronic N Federal tax 10.5% funds transfer (EFT). This legislation, the Debt Collection Improvement Act of 1996-part of the Omnibus Consolidated Resciss...
The granite processing sector of the northwest of Spain handles many varieties of granite with specific technical and aesthetic properties that command different prices in the natural stone market. Hence, correct granite identification and classification from the outset of processing to the end-product stage optimizes the management and control of stocks of granite slabs and tiles and facilitat...
The granite-hosted Tangziwa SnCu deposit in the Gejiu district shows variable alteration of granite with associated mineralization. In this paper, we used whole rock chemistry mass balance calculations and Sr, Nd, Pb, Li, B isotope data to constrain source metals fluids different stages. δ7Li δ11B values unaltered weakly altered (Type I) samples fall narrow ranges −0.70 3.61‰ −14.87 −12.82 ‰, r...
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