Stilbite

UNB-2016-0521Minerals » Tectosilicates » Zeolite

Description

Small yellow globular Stilbite crystals. Stilbite (NaCa2Al5Si13O36 x 16H2O) can be white, greyish, yellowish, red or brown. Lustre is vitreous but pearly on cleavage and streak is colourless. Hardness is 3 1/2 to 4 and cleavage is perfect in one direction. Stilbite usually occurs as bladed aggregates of numerous twinned crystals that resemble "wheat sheaves". Stilbite can also be radial, globular, or tabular (rare).

Specifications

Object nameStilbite
IDUNB-2016-0521
Legal statusPermanent collection
CategoryMineral
Classification
Mineral group:
Tectosilicates
Sub-group:
Zeolite
Composition
  • (MAlO2)(SiO 2)x(H2O)y
OriginMoore, New Jersey, U.S.A.
Pieces1
PartialNo
Measurements
  • 2.5cm x 4.5cm x 3.7cm

Map of Origin

Publications

  • Chesterman, C.W. 1979. Audubon Society, Field Guide to North American Rocks and Minerals. Knopf.