| Rocks and Minerals for Sale Page 16 Stromatolites |
| SpiritRock Shop |
Click on any photo to see a larger version
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| Item # KJ117001 Large 410g Polished Kambaba Jasper Freeform , Madagascar $41.00 |
| Item # KJ117003 Large 447g Polished Kambaba Jasper Freeform, Madagascar $44.00 |
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| Stromatolites / Kambaba Jasper Stromatolites, colonial structures created by Cyanobacteria (commonly called blue-green algae) are among the oldest fossils on earth, being found in rocks over 3 billion years old. Once the dominant life form on the planet, Stromatolites are now found in only a few places, such as Madagascar. Cyanobacteria form these mound-like structures by growing through sediment, binding the particles together resulting in successive layers which, over very long time periods, may harden to form rocks. These structures may be from fractions of an inch to several feet in diameter. Cyanobacteria were likely responsible for the creation of earth's oxygen atmosphere. They were the dominant life form on Earth for over 2 billion years. Today they are nearly extinct, living a precarious existence in only a few localities worldwide. Fossil Stromatolites constitute our earliest and most pervasive record of life on Earth. Although many Stromatolites are fossils, there are a number of locations on the modern-day Earth where Stromatolites are still forming. Kambaba Jasper is a rare fossilized jasper from Madagascar. Jasper is a micro crystalline variety of Quartz, a silicon dioxide mineral with a hardness of 6.5 to 7. Jaspers can include up to 20% foreign materials, which account for its wide variety of colors and patterns. Kambaba Jasper (sometimes called Kabamba Jasper) from Madagascar. It is a Stromatolite Jasper, which means that it is composed of fossilized algae. However...Chris likes this material because it looks like her "Old 45's" (ancient records...you know... way before Cd's and I-PODS) |
Large 410g (0.9lb) Polished Stromatolite Kambaba Jasper from Madagascar. Beautiful polish work, shows much
better in person than these pictures reflect. This specimen measures 4.1 x 1.9 x 2.0 inches (10.5 x 4.9 x 5cm)
better in person than these pictures reflect. This specimen measures 4.1 x 1.9 x 2.0 inches (10.5 x 4.9 x 5cm)
| Item # KJS117006 Un-Polished Kambaba Jasper Slab from Madagascar $16.80 |
| Excellent Stromatolite Slab with amphibian-like Orbicular patterns and a very nice display. This slab measures a great 5.6 x 3.2 x 0.25 inches (144 x 81 x 6mm) and weighs 0.28 lb (128g). Photo taken wet to show pattern and coloring. Will take excellent polish for slab display or cabochons. (see we do use our slab saw!) |
| Excellent Stromatolite Slab with amphibian-like Orbicular patterns and a very nice display. This slab measures a great 5.6 x 3.2 x 0.25 inches (144 x 81 x 6mm) and weighs 0.28 lb (128g). Photo taken wet to show pattern and coloring. Will take excellent polish for slab display or cabochons. (see we do use our slab saw!) |
Large 447g (1lb) Polished Stromatolite Kambaba Jasper from Madagascar. Beautiful polish work, shows much
better in person than these pictures reflect. This specimen measures 4.2 x 2.4 x 1.9 inches (10.6 x 6.1 x 4.8cm)
better in person than these pictures reflect. This specimen measures 4.2 x 2.4 x 1.9 inches (10.6 x 6.1 x 4.8cm)
| Excellent Stromatolite Slab with amphibian-like Orbicular patterns and a very nice display. This slab measures a great 5.4 x 3.2 x 0.25 inches (137 x 82 x 6mm) and weighs 0.26 lb (118g). Photo taken wet to show pattern and coloring. Will take excellent polish for slab display or cabochons. (see we do use our slab saw!) |
| Item # KJS117007 Un-Polished Kambaba Jasper Slab from Madagascar $15.80 |
| Item # KJE107004 Polished Kambaba Jasper Egg from Madagascar $39.00 |
| 2.9" Tall Kambaba Jasper Egg Excellent Stromatolite Egg with amphibian-like Orbicular patterns and a very nice display. This egg is @ 2.9 inches tall and has a diameter of @ 2.1 inches at it's widest point. This specimen comes from Madagascar. This egg weighs 0.651 lb (296g). Some natural faults as with all rocks and minerals. |
| Item # KJE107005 Polished Kambaba Jasper Egg from Madagascar $38.00 |
| 2.7" Tall Kambaba Jasper Egg Excellent Stromatolite Egg with amphibian-like Orbicular patterns and a very nice display. This egg is @ 2.7 inches tall and has a diameter of @ 2.1 inches at it's widest point. This specimen comes from Madagascar This egg weighs 0.559 lb (254g). Some natural faults as with all rocks and minerals. |
| Item # KJ117002 Large 454g Polished Kambaba Jasper Freeform, Madagascar $69.00 |
Large 454g (1lb) Polished Stromatolite Kambaba Jasper from Madagascar. Beautiful polish work, shows much
better in person than these pictures reflect. This specimen measures 4.25 x 1.9 x 2.2 inches (10.8 x 5.6 x 4.9cm)
better in person than these pictures reflect. This specimen measures 4.25 x 1.9 x 2.2 inches (10.8 x 5.6 x 4.9cm)