| Ocos Geodes |
| SpiritRock Shop |
| Item # OG1108001 Lot of 5 Polished Ocos Geode (Half) $15.00 Quantity Available 1 lot |
| Lot of 5 beautiful Ocos Geode polished halves -reddish brown with clear quartz crystals -dark grey and white with fine drusy quartz crystals -Black and white with very fine drusy with geothite inclusions, wispy shell wirh rope formation -Blackand white with drusy quartz with inclusions |
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Many names have been given to geodes throughout the
world, but none so fitting as the Ocos Geode (some say
these are named for their source, the Orinoco River in
Brazil, others believe it came from the Portuguese word
for "hollow," you decide...)
Ocos formed some 130 million years ago in
basalt amygdules (a formerly open vesicle which has
been filled with a secondary mineral(s) precipitated from
low temp ground waters which penetrated into the rock).
Over the years the basalts have been weathered away
and left behind small geodes in what is now called
cascalho, a dark reddish brown soil in the Serra Geral
Formation.
Ocos are mainly found in the 3000 ft elevations of the
Tres Pinheiros (Three Pines) region. The geodes are
normally removed from the basalt by hand (which can be
difficult because their skin or outer shell of chalcedony is
relatively thin and often rope-like in formation). The Ocos
are then taken back down the steep mountains in burlap
sacks or buckets on horseback or by pack mules to the
town of Soledade to be cut and polished.
Thin shell Ocos called "casa fina" command a higher
price, but display less of the famous wavy or flame like
patterns on the rim. Ocos size is usually small (1-3 inches)
When cut, Ocos display brilliant drusy quartz linings on
tan, grey, brown or black shells with white waves or
flames. Many Ocos have inclusions in the quartz, rarely
amethyst.
Ocos Geodes aka Ochos Occos |
| Item # OGN708001 Gold Plated Ocos Geode slab with Amethyst Crystal Pendant $18.00 Quantity Available 1 ea |
Gold tone electroplated Ocos geode slab polished both sides with
an Amethyst Crystal mounted. Beautiful wispy swirls on this clear,
white, tan and grey with swirls of red Ocos geode. Hand layered
and finished. A stunning pendant! Measures @ 2" long by 0.9"
wide and is @ 1/8" thick. Polished both sides for 2 different looks.
an Amethyst Crystal mounted. Beautiful wispy swirls on this clear,
white, tan and grey with swirls of red Ocos geode. Hand layered
and finished. A stunning pendant! Measures @ 2" long by 0.9"
wide and is @ 1/8" thick. Polished both sides for 2 different looks.
| Item # OG1108002 Lot of 6 Polished Ocos Geode (Half) $16.00 Quantity Available 1 lot |
| Lot of 6 beautiful Ocos Geode polished halves -reddish brown, blacks, greys with clear quartz crystals some with very fine drusy with geothite inclusions, wispy shell with rope formation -Blackand white with drusy quartz with inclusions |
