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
2 items @ $50.00  

Bayldonite

#PD30940R

Bayldonite

#PD30940R
Availability
Sold
Size
10 x 7.5 x 4.5 cm - Cabinet 
Formula
Cu3PbO(AsO3OH)2(OH)2 (RRUFF)
Locality
Penberthy Croft mine, St. Hilary, Cornwall, England
Tagged
arsenate , copper

Large specimen with spongy matrix lined with bright green spherulitic crystals of Bayldonite. Rich, handsome specimen from this famous Cornish mine.

Bayldonite

Formula
Cu3PbO(AsO3OH)2(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Encrustations, Mammillary, Druse 
Cleavage
None, None, None 
Luster
Greasy (Oily) 
Color
grass green, yellow green, dark green 
Streak
green 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness
4.5 

Data courtesy of Webmineral.

Collection
Phillips Collection

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2025 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map