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Planar deformation features in quartz identify it as shocked quartz. Planar deformation features, or PDFs, are optically recognizable microscopic features in grains of silicate minerals (usually quartz or feldspar), consisting of very narrow planes of glassy material arranged in parallel sets that have distinct orientations with respect to the grain's crystal structure.
Ternary diagram showing the relative abundance of quartz, feldspar, and lithic grains and views of what selected compositions would look like. A QFL diagram or QFL triangle is a type of ternary diagram that shows compositional data from sandstones and modern sands, point counted using the Gazzi-Dickinson method. The abbreviations used are as ...
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PDF's emphasis on preserving the visual appearance of documents across different software and hardware platforms poses challenges to the conversion of PDF documents to other file formats and the targeted extraction of information, such as text, images, tables, bibliographic information, and document metadata. Numerous tools and source code ...
Web-integrated crystal structure visualization is tailored for examining crystal structures in web browsers, often supporting wide color spectra (up to 32 bit) and window size adaptation. However, web-generated crystal structure images are not always suitable for publishing due to issues such as resolution depth, color choice, grayscale ...
– Density of quartz (= 2.648 g/cm 3) μ q {\displaystyle \mu _{q}} – Shear modulus of quartz for AT-cut crystal ( μ q {\displaystyle \mu _{q}} = 2.947x10 11 g·cm −1 ·s −2 ) The normalized frequency Δ f {\displaystyle \Delta f} is the nominal frequency shift of that mode divided by its mode number (most software outputs normalized ...