Open main menu
Home
Random
Recent changes
Special pages
Community portal
Preferences
About Wikipedia
Disclaimers
Incubator escapee wiki
Search
User menu
Talk
Dark mode
Contributions
Create account
Log in
Editing
Stilbite
(section)
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
== Crystal class == Stilbite is usually [[Monoclinic crystal system|monoclinic]] 2/m, meaning that it has one twofold axis of [[rotational symmetry]] perpendicular to a [[Reflection symmetry|mirror plane]]. The twofold axis is the crystal axis b, and the a and c crystal axes lie in the mirror plane. For a monoclinic crystal a and c are inclined to each other at an angle Ξ² which is not a right angle. For stilbite Ξ² is nearly 130Β°. Stilbite crystals, however, appear to be almost [[Orthorhombic crystal system|orthorhombic]], and a larger [[unit cell]] can be chosen, containing two formula units (Z = 2) such that resembles an orthorhombic cell, with all three crystal axes very nearly mutually perpendicular. The mineral is said to be pseudo-orthorhombic. Non-[[Endmember (mineralogy)|endmember]] forms of stilbite may be [[Triclinic crystal system|triclinic]] or even truly orthorhombic, indeed the framework can have symmetry ranging from orthorhombic to triclinic in a single crystal.<ref name=ZW/>
Edit summary
(Briefly describe your changes)
By publishing changes, you agree to the
Terms of Use
, and you irrevocably agree to release your contribution under the
CC BY-SA 4.0 License
and the
GFDL
. You agree that a hyperlink or URL is sufficient attribution under the Creative Commons license.
Cancel
Editing help
(opens in new window)