MATERIALS are generally well-known
already so we only tried to incorporate them in
this information as a brief reference.
"The five stones
most associated with Arizona are: fire agate, gem
chrysocolla, peridot, petrified wood, and
from the "Arizona Centennial" issue of
February 2012 Rocks and Minerals magazine by
Wolfgang Mueller of DiWolf.
Campbellite - A copper
mineral assembage that came from the Bisbee
Campbell shaft in the mid 1900's in "lunch boxes"
til the day it closed . It does have it's own
unique appearane living up to it's own name and it
is the only location for this material with this
Tremolite - Calcium Magnesium Iron
Silicate and a few other elements thrown in for
good measure. - It forms a series with
actinolite.- Hardness 5 - 6 - Translucent to
transparent, interlocking, long-bladed, prismatic
crystals make lapidary procedures difficult. The
inclusion of chrome gives it its wonderful green
color variations. The ones sold by DiWolf are from
St. Lawrence County, NY.
Druzy quartz over Barite - The
matrix is silicated limestone that had clear
barite crystals growing on it. Subsequently a
druzy (lots of very small crystals) quartz grew
over the top of the matrix and the barite. A very
lovely sparkly black and white mix was created by
Mother Nature. We just remove some of the excess
material and polish the edges for use in jewelry
or display pieces.
Eudialyte - A complex silicate of
calcium, sodium, zirconium, cerium, iron and
manganese, with hydroxyl and chlorine. - Hardness
5 - 5.5 - Crystals- tabular or prismatic are
mostly translucent. Tints or shades of red are
thought to be from manganese. The ones sold by
DiWolf were from pegmatites in Kipawa, Quebec,
Kyanite - Aluminum Silicate -
Hardness 4 - 7.5 - Crystals are thin brittle and
cleavage is pronounced. Has a glassy luster. It is
transparent to translucent and often color zoned.
Blue is the most common color. The crystals have
extreme variation in hardness, making lapidary
procedures difficult. The ones sold by DiWolf are
mostly from Brazil.
- SiO2 - Silicon dioxide - Hardness 7.
Agate - usually a banded cryptocrystaline quartz
that is usually translucent to tranparent
Jasper - also a cryptocrystalin
quartz massive and opaque The lapidary material is
usually selected for its pictures and landscape
- Magnesium iron silicate hydroxide - A group of
rock-forming minerals. When it forms rock it is
known as serpentinite. It is always a secondary
mineral derived front the alteration of magnesium
rich silicate minerals and is found in both
igneous and metamorphic rocks. The color is
usually in the greenish range with a soapy feel,
and a greasy luster and commonly opaque.
Relatively soft and frequently used for carving.
Sphalerite - Zinc sulfide
Stichtite - Hydrous magnesium
chromium carbonate hydroxide - Hardness 2.5 or
less. - It occurs in serpentine rock and is
massive, foliated, lamellar, fiberous, or as
micaceous scales. It's color is bright lilac to
rose-pink. The ones sold by DiWolf are from