Image: <a rel="nofollow" class="external text" href="https://www.flickr.com/people/47445767@N05">James St. John</a> (CC BY 2.0)
monoclinicuncommonSilicates
Jade
Ca2(Mg,Fe)5Si8O22(OH)2
This image displays a ventifact of nephrite jade, a dense, felted metamorphic rock primarily composed of tremolite-actinolite amphiboles, exhibiting a dull greenish-brown color.
Jade Physical Properties
Mohs Hardness
6.5Crystal System
monoclinicLuster
waxyStreak Color
whiteCleavage
Poor to indistinct due to massive aggregate natureFracture
splinterySpecific Gravity
3Colors
green, white, cream, brown, blackTransparency
translucentType Locality
Granite Mountains, Wyoming, USAMineral Group
SilicatesUses
jewelry, carvings, ornamental objectsAssociated Minerals
Rarity
uncommonGeological Context
Nephrite jade is a metamorphic rock formed in Precambrian terrains, resulting from the alteration of ultramafic rocks or dolomitic limestones under regional metamorphism.
