Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)
monoclinicuncommonSilicates
Datolite
CaB(SiO4)(OH)
This image displays a well-formed, pale yellowish-green datolite crystal exhibiting a vitreous luster. The crystal is translucent, allowing some light to pass through, and shows distinct crystal faces.
Datolite Physical Properties
Mohs Hardness
6Crystal System
monoclinicLuster
vitreousStreak Color
whiteCleavage
noneFracture
conchoidalSpecific Gravity
2.95Colors
pale green, yellowish-greenTransparency
translucentType Locality
Charcas, San Luis Potosí, MexicoMineral Group
SilicatesUses
collector, gemstoneAssociated Minerals
zeolites, prehnite, apophyllite, calcite, quartz, epidote, native copperRarity
uncommonGeological Context
Datolite typically forms in cavities and veins within mafic igneous rocks, such as basalt, often as a product of hydrothermal alteration. It can also be found in contact metamorphic zones.
