Crystal twinning
Crystal twinning It has been suggested that twin boundary ... merged into this article or section. ( Discuss ) Crystal twinning occurs when two separate crystals share some of the same crystal lattice points in a symmetrical manner. ...
http://en.wikipedia.org/wiki/Crystal_twinning - 5k - Cached - Similar pages

Twinning
Twinning Twinning (making a twin of) has at least ... tendency to do so City and town twinning Widening of a road by construction of ... it, with a median in between (Canada) Crystal twinning in crystallography refers to intergrown crystal ...
http://en.wikipedia.org/wiki/Twinning - 1k - Cached - Similar pages

Crystal habit
Crystal habit In mineralogy, shape and size give ... many terms used by mineralogists to describe crystal habits are useful in communicating what specimens ... habits which are influenced by certain factors. Crystal habit may mislead the inexperienced as a mineral's crystal system can be hidden or disguised. Factors influencing a crystal's habit include: a combination of ...
http://en.wikipedia.org/wiki/Crystal_habit - 9k - Cached - Similar pages

User:OldakQuill/Science
... fracture) Concretion Conductivity Conductor Contact metamorphism Contact twinning Coprolite Coral Core Coxcomb Crater Crazing Crumbly Crust Crust (earth layer) Crusty Cryptocrystalline Crystal Crystal aggregate Crystal angle Crystal class Crystal face Crystal form Crystal ...
http://en.wikipedia.org/wiki/User:OldakQuill/Science - 23k - Cached - Similar pages

Microcline
Microcline Optical properties - Microcline Microcline feldspar Crystal System: Triclinic Color in PPL: Colorless Pleochroism ... section due to microcline's low relief. Twinning: Typically displays albite twinning and pericline twinning . This combination leads to a grid pattern, hence microcline displays gridiron twinning . Can also display carlsbad twinning , simple ...
http://en.wikipedia.org/wiki/Microcline - 5k - Cached - Similar pages

Quartz   (translated from French)
... silicon dioxideor silica) Crystalline system rhomboedric Classify crystal orgroup of space P3 1 21 or ... finishedby a pyramid with 6 faces Facies ? Twinning yes Optical properties Opacity of transparency to ... or smoked crystals, or in the microscopic crystal shape of translucent aspect. structure is hexagonal ... the former Greeks were useful themselves of crystal balls of rock to cool the hands ... excellent heat insulator and electric; the word "crystal" derives besides from the Greek ?????, cold; ...
http://fr.wikipedia.org/wiki/Quartz - 13k - Cached (French) - Wikipedia (French) - Similar pages

User talk:Vsmith
... Guettarda 03:27, 24 January 2006 (UTC) Crystal twinning literature Hi Vsmith, I just read your contributions to crystal twinning, especially the part that there are three ... source can provide some more information about twinning than is already put into the ...
http://en.wikipedia.org/wiki/User_talk:Vsmith - 85k - Cached - Similar pages

Category:Crystallography
... Bragg's law Bravais lattice C Cleavage (crystal) Close-packing Crystal habit Crystal optics Crystal structure Crystal system Crystal twinning Crystallization processes Crystallographic ...
http://en.wikipedia.org/wiki/Category:Crystallography - 2k - Cached - Similar pages

Weddellite
... CaC 2 O 4 �2H 2 O ) Crystal system Tetragonal Crystal class ? Color Yellowish brown Streak White Mohs ... Vitreous ( Glassy ) Opacity ? Fracture Conchoidal Cleavage OUI Crystal habit eight-face bi-pyramid (typical) common Crystal face ? Twinning yes Crystall optics Refractive index 1. ...
http://en.wikipedia.org/wiki/Weddellite - 4k - Cached - Similar pages

Cassiterite
... purple, wine, black, reddish brown or yellow Crystal habit Pyramidic, prismatic Crystal system tetragonal; 4/m 2/m 2 ... in thin crystals. Its luster and multiple crystal faces produce a desirable gem. Cassiterite is ... deposits in Malaysia, Thailand, Indonesia, and Russia. Crystal twinning is common in cassiterite and most ...
http://en.wikipedia.org/wiki/Cassiterite - 5k - Cached - Similar pages