Golden Amphibolite All Entries
Golden Amphibolite
This coarse-grained rock rich in amphibole
minerals with golden yellow surface luster is traded as Golden Amphibolite. It
is found in several places on Earth. Commercially available specimens come from
the USA (Wyoming, New Hampshire, Massachusetts) or from western
Australia. Visually, Golden Amphibolite differs considerably from normal
amphibolite rock. The latter usually has a speckled appearance in black and
white with a medium to coarse grained structure with frequent banding
(nickname: Salt & Pepper rock). Its main components are plagioclase
feldspar (mostly white to light grey in color) and amphibole minerals
(hornblende or anthophyllite). The latter usually look black but can also range
from brown to dark grey. Amphiboles in such bright golden yellow colors as seen
in the Golden Amphibolite are rarely found. Studies by Dietrich et al.
(1988) of a Golden Amphibolite from Wyoming showed that the amphibol minerals
have partially or completely decomposed in several stages to a mixture of
goethite and opaline quartz. The mineral composition is not visible
macroscopically but determinable by microscopic, radiographic and chemical
examinations as conducted by Dietrich et al. It is likely that Golden
Amphibolites from other parts of the world developed their color due to a
partial decomposition as well. This process produces thin platlets and flakes
of iron oxides (Goethite) that are responsible for the conspicuous iridescent
golden luster. Golden Amphibolite« is created by nature through the
metamorphic transformation of magmatic gabbro or volcanic basalt
(ortho-amphibolite) at temperatures between 500° - 700° Celsius and a pressure
of 5 - 10 kilobar (which corresponds to a depth of about 15 to 30 kilometers).
Such conditions prevail in orogenesis processes during regional
metamorphism. The amphibolite, most likely grunerite , has now been largely
altered to hematite, goethite and quartz and it displays a beautiful golden
iridescence. Also called "Gold Leaf Stone" it occurs in the Pilbara
region of Western Australia on Abydos Station approximately 120 km south of
Port Hedland.
Golden Amphilbolite is used for protection, as
it not only repels, but also sends back the negative energies to the
sender. Spiritually, it assists us in achieving a state of certainty without
wilfulness, allowing us to easily adapt to the best path to take. Golden
Amphilbolite is a “stone of courtesy”, especially helpful to people who greet
and assist the public. It will even instil a polite nature in those
around you. Emotionally, it promotes a loving and unprejudiced
discernment within us. It provides the ability to resolve unsettled
emotions in our life. Mentally, Golden Amphilbolite provides us with the
courage to act on our thoughts and feelings. It instils the courage to
follow through with life path decisions.