Marra Mamba Tiger's Eye is a rare type of Tiger Eye found only in the Hamersley Ranges of Western Australia. Only two deposits have ever produced “true” Marra Mamba, a rare type with reds, blues, yellow, gold and greens.
This will be a fabulous addition to your collection!
Item weighs approximately 2lbs and is 9.5 x 3.5 x .75 inches
Lighting glare may be present in the photos.
Please contact us with any questions or concerns before purchasing.
Marra Mamba Tiger's Eye
Marra Mamba Tiger's Eye formed around 2.7 billion years ago when stromatolites and other photosynthetic bacteria gave off oxygen as a waste product. This oxygen built up in the atmosphere and dissolved in the sea water. When iron, produced mainly from huge submarine volcanoes came in contact with this oxygen, it precipitated as iron oxide in the sea floor and resulted in iron-rich and silica-rich bands, which are now referred to as banded iron formations.
Geological movement over millions of years caused folding and faulting to occur, distortion the layers. Heated fluids passed through the rock and dissolved material and redeposited it elsewhere. The fibrous Riebeckite crystals were replaced by silica with fine dusts of yellow Goethite. These fibrous bands lead Tiger's Eye to be classified as a chatoyant gemstone.Causes Of Color Banding
- White - Quartz
- Yellow - Goethite
- Red - Hematite
- Blue - Riebeckite
- Green - A mixture of blue Riebeckite and yellow goethite
- Black -Hematite and Magnetite
Source: https://www.fossilera.com/minerals-for-sale/marra-mamba-tigers-eye?
Please contact us with any questions or requests for more pictures before purchasing as all sales are final on this item.