Work

Equilibrium form of negative crystals in igneous quartz.

Year: 2002

Type: article

Abstract: Morphology and internal textures of negative crystals in igneous quartz were studied by combining microscopic observation and annealing experiments of natural specimens. Judged from its symmetry and the annealing experiments, the equilibrium form of the negative crystals is estimated to be rounded bipyramidal. The rounded bipyramidal shape suggests that only rhombohedral faces are singular under the growth conditions of quartz crystals in felsic magmas. Thermal history of these crystals after the eruption of magmas was estimated by the morphology and the internal texture of the negative crystals.

Source: Journal of Mineralogical and Petrological Sciences

DOI: 10.2465/jmps.97.59

Authors: Ryuji ASADA, Norimasa SHIMOBAYASHI, Masao KITAMURA

Institutions: Kanazawa University, Kyoto University

Language: English

Topic: Geological and Geochemical Analysis

Subfield: Geophysics

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W1998467263

FWCI:

Cites: 8

Cited by: 7

Related to: 10