Apogee
发表于 2025-3-26 23:58:29
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演绎
发表于 2025-3-27 01:59:13
Geological Settings of Archean Rare-Metal Pegmatites,o the Southern Cross Terrane in the southeastern part of the craton. Two main contrasting models for the seven Archean geodynamic events (D0–D6) are discussed: modern-style plate tectonics with a westward directed subduction type scenario, or vertical crustal movements induced by constantly upwellin
未完成
发表于 2025-3-27 08:33:21
Petrography and Mineralogy,te, spodumene and beryl. The samples were classified into 21 distinct mineral associations or pegmatite mineral zones. At Bikita, pollucite forms lens-like massive mineralisation with a crosscutting vein network of purple lepidolite, petalite, quartz and feldspar. Pollucite exhibits rather inhomogen
APRON
发表于 2025-3-27 10:29:36
Geochronology of Archean LCT Pegmatites,e Neo-Archean pegmatites due to the widespread occurrence of these minerals as accessories in almost all samples. Furthermore, they are formed at a virtually constant level during pegmatite crystallisation from main crystallisation to late state hydrothermal overprint. The .Ar/.Ar ages cover a large
珊瑚
发表于 2025-3-27 16:09:04
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Oafishness
发表于 2025-3-27 21:36:28
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接触
发表于 2025-3-28 01:25:27
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ALTER
发表于 2025-3-28 02:11:19
Book 2019 the complex geological framework: 1) enhances our knowledge of the formation ofLCT pegmatite systems, and 2) will contribute to the further exploration of additional world-class LCT pegmatite deposits, which 3) may host massive pollucite mineralisations. .