A series of publications purport to provide evidence that the Earth was subjected to an
extraterrestrial event or events at∼ 12.9 ka creating an environmental cataclysm and the …

Scanning electr on microscopy (SEM) and x-ray microanalysis can produce magnified
images and in situ chemical information from virtually any type of specimen. The two …

Scheelite, a good proxy to record the complex history of hydrothermal evolution, has been
investigated in the Dabaoshan porphyry Mo-W deposit, South China. Based on …

In nature, calcium carbonate (CaCO3) in the form of calcite and aragonite nucleates through
different pathways including geogenic and biogenic processes. It may also occur as …

Abstract Extremely U-depleted (< 1 ppm) zircons from H8 banded ores in the East Orebody
of the Bayan Obo REE–Nb–Fe deposit are presented, with mineral compositions, textures …

Cathodoluminescence (CL) spectroscopy in an SEM has been used to investigate the point
defect structure of clear natural α-quartz at 295 K. Cathodoluminescence processes and …

The relationship between cathodoluminescence (CL) response and chemical composition of
scheelite from a variety of ore-deposit settings (eg., orogenic Au, skarn, porphyry-related …

Luminescence is the eye-catching phenomenon of light emission by a mineral after some
input of energy (the excitation). Although commonly used in Earth sciences only to produce …

Layered (oxy) hydroxide minerals often possess out-of-plane hydrogen atoms that form
hydrogen bonding networks which stabilize the layered structure. However, less is known …

This paper qualitatively explains the differences in the cathodoluminescence (CL) colors of
alumina (Al 2 O 3) inclusions in steels and presents a method of distinguishing MgAl 2 O 4 …