RockVault
Scolecite

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 (Zeolite Group)

Scolecite

CaAl₂Si₃O₁₀·3H₂O

This image displays radiating sprays of white to colorless, acicular Scolecite crystals, forming delicate, fan-like aggregates. The crystals are typically slender and often terminate in sharp points.

Scolecite Physical Properties

Mohs Hardness

5

Crystal System

monoclinic

Luster

vitreous

Streak Color

white

Cleavage

perfect on {110}

Fracture

uneven

Specific Gravity

2.25

Colors

white, colorless, pink, salmon, yellow, red

Transparency

transparent

Type Locality

Aurangabad District, Maharashtra, India

Mineral Group

Silicates (Zeolite Group)

Uses

collector, spiritual

Associated Minerals

powellite, stilbite, heulandite, apophyllite, calcite

Rarity

uncommon

Geological Context

Scolecite is a hydrothermal mineral commonly found in the amygdaloidal cavities and veins of basaltic volcanic rocks. It forms during the late-stage alteration of these rocks, often in association with other zeolites.