Feldspar (/ ˈ f ɛ l (d) ˌ s p ɑːr / FEL(D)-spar; sometimes spelled felspar) is a group of rock-forming aluminium tectosilicate minerals, also containing other cations such as sodium, calcium, …

2025年3月5日 · Feldspar is one of the most common minerals found in the Earth’s crust, and it forms some really fascinating varieties. Amazonite, orthoclase, and microcline are great …

2011年8月1日 · A compilation of ongoing research into red feldspar and its sources around the world, as well as the detection of various color treatment processes.

2019年8月10日 · Feldspars are a group of closely related minerals that together are the most abundant mineral in the Earth's crust. A thorough knowledge of the feldspars is what …

2020年7月22日 · There is still no convenient method that can quickly and reliably determine whether a red andesine feldspar has been treated. For this study, both colorless labradorite …

2023年4月23日 · Feldspar is the name of a large organization of rock-forming silicate minerals that make up over 50% of Earth’s crust. They are discovered in igneous, metamorphic, and …

article presents the results of the author’s studies at the California Institute of Technology that involve what has come to be known as Chinese red andesine (figure 1), and reviews the key …

Feldspar is the most abundant mineral group in the Earth’s crust. There are more feldspars (60%) than all the other minerals combined in the outer (13-17) km of the crust 1. Feldspars occur in …

2021年8月29日 · Feldspars are the most common minerals at the Earth's surface. In fact, if the entire composition of the Earth's crust were regarded as a single mineral, it would calculate …

2024年4月27日 · In this paper, through detailed analysis and testing of ten market-acquired red and green feldspar samples, including UV-vis spectra, microscopic characteristics, …