Euhedral and anhedral - Wikipedia
Euhedral and anhedral are terms used to describe opposite properties in the formation of crystals. Euhedral (also known as idiomorphic or automorphic) crystals are those that are well-formed, with sharp, easily recognised faces.
Crystal shape – Geology is the Way
Crystals in rocks are classified as euhedral, subhedral, and anhedral based on their crystal shape. These three terms comes from the same Greek root, hedron , meaning ‘face’ (of a solid figure). Eu means ‘good’, hence euhedral ‘good face’ (i.e. well-formed face).
3.6 Natural euhedral garnet crystal - Geosciences LibreTexts
2022年12月16日 · We describe crystals, such as the well-formed garnet crystal with well-developed faces, as being euhedral. On the other hand, petrologists and mineralogists may refer to crystals of garnet in a rock. The crystals may not have any smooth faces at all.
General : Anhedral, Subhedral and Euhedral - mindat.org
2019年1月30日 · Anhedral, subhedral, euhedral. Let me start with Euhedral: showing well developed forms and symmetry of the crystal. Subhedral: showing a less than well developed crystal with respect to forms and symmetry. Anhedral: not showing the forms or symmetry of a crystal. Those are my definitions.
Euhedral - Wikipedia
This page was last edited on 10 February 2012, at 19:27 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
Definition of euhedral - mindat.org
Definition of euhedral i. Said of a mineral grain that is completely bounded by its own rational crystal faces, and whose growth during primary crystallization or recrystallization was not restrained or interfered with by adjacent grains, and the faces not greatly affected by later physical or chemical erosion.
Crystal habit - Wikipedia
Euhedral: a crystal that is completely bounded by its characteristic faces, well-formed. Synonymous terms: idiomorphic, automorphic; Subhedral: a crystal partially bounded by its characteristic faces and partially by irregular surfaces. Synonymous terms: hypidiomorphic, hypautomorphic;
3.3.1: Crystal Forms - Geosciences LibreTexts
2022年12月16日 · If a crystal contains only one form, all crystal faces are the same size and shape. Euhedral garnet crystals, for example, generally have one form consisting of 12 identical diamond-shaped faces like the dodecahedron in Figure 3.5, earlier in this chapter.
Euhedral Definition & Meaning - Merriam-Webster
The meaning of EUHEDRAL is idiomorphic.
Definition of euhedra - mindat.org
A crystal that is euhedral, i.e. completely bound by its own intrinsic crystal faces.
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