mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
0 item @ $0.00  

Mineralpedia Details for Wollastonite

Reset

Wollastonite

Wollastonite

Named for William Hyde Wollaston, the English mineralogist and chemist who is famous for discovering the elements palladium and rhodium.  These elements were discovered in the process of Wollaston’s development of a practical method of processing platinum ore. Additionally, Wollaston was the first to observe Fraunhofer lines in the solar spectrum which led to the detection of the solar elements and he is the inventor of the camera lucida, the goniometer, and the Wollaston prism. Wollastonite is common in contact metamorphosed carbonates, the intruding igneous rock, and the skarn along the contact between the two. It is a widely distributed mineral that can, on occasion, show a yellow cathodoluminescence.  

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/wollastonite.pdf

Formula
CaSiO3 
Crystal System
Triclinic 
Crystal Habit
Tabular, short, prismatic; fibrous, compact, massive 
Cleavage
Perfect, Good 
Luster
Vitreous, pearly 
Color
White, grey, light green, pink, brown, red, yellow 
Streak
White 
Class
Pinacoidal 
Fracture
Irregular/Uneven 
Hardness
4.5-5 
WebMineral
View Wollastonite 
Mindat
View Wollastonite 

Wollastonite from Commercial quarry, Crestmore, Riverside Co., California, United States

Wollastonite
            from Commercial quarry, Crestmore, Riverside Co., California, United States Wollastonite is almost indicative of a skarn deposit as a calc-silicate mineral. This specimen features long, divergent crystals to 4.5cm.
Click thumbnail images for larger view.

Wollastonite from Keeseville, Essex Co., New York, United States

Wollastonite
            from  Keeseville, Essex Co., New York, United States

Long, bladed pearly crystals compact in matrix.

Click thumbnail images for larger view.

Wollastonite from Magnet Cove, Hot Spring Co., Arkansas, United States

Wollastonite
            from Magnet Cove, Hot Spring Co., Arkansas, United States

A tightly packed aggregate of white, shimmering Wollastonite with crystal blades to over 3cm. Wollastonite is typically found in thermally metamorphed siliceous carbonate deposits, skarns and carbonites.

Click thumbnail images for larger view.

Wollastonite from Boscoreal, Somma-Vesuvius Complex, Naples, Campania, Italy

Wollastonite
            from Boscoreal, Somma-Vesuvius Complex, Naples, Campania, Italy

Volcanic Augite matrix with vugs filled with colorless Wollastonite crystals to 3mm and water clear stubby Fluorapatite.

Click thumbnail images for larger view.

Wollastonite from Jeffrey mine, Asbestos, Quebec, Canada

Wollastonite
            from Jeffrey mine, Asbestos, Quebec, Canada

Somewhat unusually gemmy, colorless Wollastonite with bladed crystals to 3cm.

Click thumbnail images for larger view.

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2021 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map