| Ocos Geodes |
| SpiritRock Shop |
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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 # 1-OGP09190021 Polished Large Ocos Geode with Lid $28.00 |
| This Large Ocos Geode has beautiful black, white and clear swirls on the polished edges with well formed clear quartz crystals with black inclusions inside. The outside has the classic "rope" like design. This piece has been in our personal collection since 2005 This pair weighs 5.1 oz or 0.32 lb (145g) and measures 2.8 x 2.4 x 1.8 inches (7.1 x 6.1 x 4.5 cm) |
| Item # A-OG10200050 Polished Ocos Geode $10.00 |
| Grey, white and well formed Amethyst quartz crystals in the vug. Geode weighs 8g |
| Black, maroon, white, grey and clear wisps on the polished edge with well formed quartz crystals Geode weighs 8.5g |
| Tan, mahogany black and white swirls and wisps on the polished edge with well formed quartz crystals in the maroon vug Geode weighs 13g |
| Tan, red, white and clear wisps on the polished edge with well formed quartz crystal tower in the vug. Geode weighs 5.5g |
| Item # B-OG10200050 Polished Ocos Geode $10.00 |
| Item # C-OG10200050 Polished Ocos Geode $10.00 |
| Item # E-OG10200050 Polished Ocos Geode $10.00 |
| Item # D-OG10200050 Polished Ocos Geode $10.00 |
| Grey, white and clear wisps on the polished edge with well formed quartz crystals in the vug. Geode weighs 10g |
| Item # F-OG10200050 Polished Ocos Geode $10.00 |
| Grey, white, tan and clear scallops on the polished edge with well formed druzy quartz crystals with touches of Goethite in the vug. Geode weighs 10.5g |
| Item # G-OG10200050 Polished Ocos Geode $10.00 |
| Tan, white, brown and clear wisps on the polished edge with well formed quartz crystals in the vug. Geode weighs 12g |
| Item # H-OG10200050 Polished Ocos Geode $10.00 |
| Grey, white, black, brown and clear wisps on the polished edge with well formed quartz crystals in the vug. Geode weighs 13.5g |
| Item # I-OG10200050 Polished Ocos Geode $10.00 |
| Black, grey, white and clear wisps on the polished edge with rolling mounds of fine quartz crystals and a single stalactite in the vug. Geode weighs 4g |
| Item # J-OG10200050 Polished Ocos Geode $10.00 |
| Black, grey, white and clear wisps on the polished edge with well formed quartz crystals in the vug. Geode weighs 8.5g |
| Item # K-OG10200050 Polished Ocos Geode $10.00 |
| Black grey, white, tan and clear wisps on the polished edge with druzy quartz crystals in the vug. Geode weighs 10.5g |
| Item # L-OG10200050 Polished Ocos Geode $10.00 |
| Tan, white and clear wisps on the polished edge with well formed quartz crystals in the vug. Geode weighs 7g |
| Item # M-OG10200050 Polished Ocos Geode $10.00 |
| Grey, tan, red, white and clear swirls on the polished edge with well formed quartz crystals in the vug. Geode weighs 7.5g |
| Item # N-OG10200050 Polished Ocos Geode $10.00 |
| Grey, white, red and clear on the polished edge with well formed quartz crystals and a single larger crystal in the vug. Geode weighs 7.5g |
| Item # O-OG10200050 Polished Ocos Geode $10.00 |
| Grey, white, tan and clear wisps on the polished edge with well formed quartz crystals in the vug. Geode weighs 7g |
| Item # P-OG10200050 Polished Ocos Geode $10.00 |
| Tan, white, pink and clear wisps on the polished edge with well formed quartz crystals with 2 spots of goethite in the vug. Geode weighs 8.5g |
| Item # Q-OG10200050 Polished Ocos Geode $10.00 |
| Black, grey, white and clear wisps on the polished edge with well formed quartz crystals in the vug. Geode weighs 9g |
| Item # R-OG10200050 Polished Ocos Geode $10.00 |
| Tan, white, red and clear waves on the polished edge with well formed quartz crystals in the vug. Geode weighs 7g |
| Shipping These specimens ship Priority Mail padded flat rate envelope or small flat rate box for a shipping cost in the USA of $10.70. The cost to ship up to 4 of these will not increase the cost of shipping over purchasing 1 item |
| These Ocos Geodes are mounted with Geo-Tac in a Thumbnail Display Box which has internal dimensions of 1" x 1" The specimen can be easily removed if you desire. Each has an Identification label with the name, locale and weight in grams |