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http://hdl.handle.net/2122/14573| Authors: | Martinelli, Giovanni* Plescia, Paolo* Tempesta, Emanuela* Paris, Enrico* Gallucci, Francesco* |
Title: | Fracture Analysis of α-Quartz Crystals Subjected to Shear Stress | Journal: | Minerals | Series/Report no.: | /10(2020) | Publisher: | Frontiers | Issue Date: | 2020 | DOI: | 10.3390/min10100870 | Abstract: | This study assesses the correlations between the intensity of stress undergone by crystals and the morphological characteristics of particles and fracturing products. The e ects of the fractures on the microstructure of quartz are also studied. Alpha quartz, subjected to shear stress, is quickly crushed according to a fracturing sequence, with a total fracture length that is correlated to the stress rate. The shear stress generates a sequence of macro and microstructural events, in particular localized melting phenomena, never highlighted before on quartz and the formation of di erent polymorphs, such as cristobalite and tridymite together with amorphous silica. |
| Appears in Collections: | Article published / in press |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| Martinelli G. et al Minerals_2020.pdf | Main article | 13.41 MB | Adobe PDF | View/Open |
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