Definition of Polysynthetic twinning. Meaning of Polysynthetic twinning. Synonyms of Polysynthetic twinning

Here you will find one or more explanations in English for the word Polysynthetic twinning. Also in the bottom left of the page several parts of wikipedia pages related to the word Polysynthetic twinning and, of course, Polysynthetic twinning synonyms and on the right images related to the word Polysynthetic twinning.

Definition of Polysynthetic twinning

Polysynthetic twinning
Polysynthetic Pol`y*syn*thet"ic, a. [Poly- + synthetic.] Characterized by polysynthesis; agglutinative. Polysynthetic twinning (Min.), repeated twinning, like that of the triclinic feldspar, producing fine parallel bands in alternately reversed positions.
Polysynthetic twinning
Twinning Twin"ning, n. (Crystallog.) The assemblage of two or more crystals, or parts of crystals, in reversed position with reference to each other in accordance with some definite law; also, rarely, in artificial twinning (accomplished for example by pressure), the process by which this reversal is brought about. Polysynthetic twinning, repeated twinning of crystal lamell[ae], as that of the triclinic feldspars. Repeated twinning, twinning of more than two crystals, or parts of crystals. Twinning axis, Twinning plane. See the Note under Twin, n.

Meaning of Polysynthetic twinning from wikipedia

- is transformation twinning, where there is a change in the crystal structure. The third is deformation twinning, in which twinning develops in a crystal...
- Plagioclase almost universally shows a characteristic polysynthetic twinning that produces twinning striations on [010]. These striations allow plagioclase...
- Sixlings are common in aragonite. Polysynthetic twins are similar to cyclic twins through the presence of repetitive twinning; however, instead of occurring...
- it as soon as a dome is cut. The Journal of gemmology mentions polysynthetic twinning (parallel lines). The star effect occurs in other sapphire colours...
- acicular to tabular prismatic Twinning Common as contact or penetration twins on {100} and {201}. Polysynthetic twinning also present. Cleavage Perfect...
- in extinctions viewed under cross polarization. Ulexite displays polysynthetic twinning parallel to the elongation, along {010} and {100} (Murdoch, 1940)...
- tabular, prismatic, rhombohedral crystals, m****ive or granular Twinning Polysynthetic twinning common Cleavage None – parting in 3 directions Fracture Conchoidal...
- that it actually abides by two twin laws. Polysynthetic twinning can occur along its (001) and another type of twinning can occur parallel to its optical...
- jadeite. It crystallizes in the monoclinic system with prismatic, typically twinned forms, though usually anhedral. Its space group can be P2/n or C2/c depending...
- crystals, irregular grains, m****ive Twinning On {101}. Crystals shocked by meteorite impact show polysynthetic twins on {112} Cleavage {110} and {111} Fracture...