Euhedral and anhedral - Wikipedia
Euhedral (also known as idiomorphic or automorphic) crystals are those that are well-formed, with sharp, easily recognised faces. The opposite is anhedral (also known as xenomorphic or allotriomorphic ), which describes rock with a microstructure composed of mineral grains that have no well-formed crystal faces or cross-section shape in thin ...
自形晶 - 百度百科
自形晶（euhedral crystal）是矿物 晶体 在岩石（岩浆岩）中发育程度的一类，一般是在岩浆结晶早期阶段的产物。 矿物颗粒的形态是由 晶体习性 、生长环境、结晶后的 熔蚀 和变形等因素所决定的。 在薄片中，晶体的轮廓主要由矿物晶面的完整性来反映，可以大致划分为自形晶、 半自形晶 和 他形晶 三种。 [1] 自形晶（euhedral crystal）具有完整的晶面和规则的形态，一般是岩浆结晶早期阶段的产物。 这种晶粒是在有足够的空间允许其充分发育的条件下形成；如晶粒的结晶较 …
自形晶与它形晶 - 维基百科，自由的百科全书
Sep 5, 2022 · 自形晶与它形晶（英语： Euhedral and Anhedral ）, 自形晶 是那些形状良好、具有清晰、易于识别表面的晶体。相反的是它形晶。具有它形晶的岩石由矿物颗粒组成，但没有良好的晶面或横截面形状。
Crystal shape – Geology is the Way
Crystals are said to be euhedral (synonyms: idiomorphic, automorphic) when they are bounded by their characteristic crystal faces, in other words when they show their crystal habit. In igneous rocks, crystals are able to be euhedral only when they have been able to grow undisturbed within the magma, not interacting or interfering with ...
euhedral - 百度百科
euhedral，英语单词，主要用作形容词，作形容词时译为” [岩] 自形的；全形的“。 [1] Individually, though, the crystals appear anything but haphazard, sporting the sharp, geometric appearance that scientists call euhedral. 尽管相互独立，这些晶体的外观并非毫无规律，它们突变出尖锐的具有几何形的外表，科学家称之为自形。
3.3: Crystal Shape - Geosciences LibreTexts
Dec 16, 2022 · 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.
Crystal habit: the general shape of a crystal Euhedral, subhedral, anhedral . Mechanical properties: -Cleavage: is the tendency of a mineral to break along regular parallel planes. Cleavage occurs because minerals have weaker bonds in one direction than in the other. Sequence of parallel steps along these directions; cleavage is described by the
Euhedral - (Mineralogy) - Vocab, Definition, Explanations - Fiveable
Euhedral refers to crystals that have well-defined, flat faces and exhibit an ideal geometric shape. This term is often used to describe the growth conditions of minerals, where they have developed unrestricted in space and time, leading to their perfect crystalline forms.
3.3.1: Crystal Forms - Geosciences LibreTexts
Dec 16, 2022 · 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 Crystal - an overview | ScienceDirect Topics
An euhedral crystal is defined as a crystal that has well-defined, sharp, and distinct crystal faces due to uninterrupted growth without external interference, commonly seen in diamond morphology studies.