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12.25 CTS Australite flange TEKTITE RG-5991 Raregems
- SKU
- RG-5991
- 寸法(mm)
- 16.400 x 15.700 x 9.600mm
- 重さ (CT)
- 12.250
- Treatment
- No Treatment
- タイプ
- Specimen
- 色
-
TEKTITE-COLLECTOR PC
WESTERN AUSTRALIA
TEKTITE FLANGE
PERFECT SHAPE
THE COME IN VARIOUS SHAPES AND SIZES SOME BEING VERY RARE
the original body (a sphere in this case) is interpreted to be solid or very close to solidification by re-entry stage. As the sphere re-enters it ablates and spalls. Spalling results in characteristic core shapes. Once ablation of material has crossed the equatorial margin of the specimen, a flange may begin to form. This leads to formation of ‘button’-type tektites. Further spalling may result in loss of the flange and creation of a lens. In larger specimens (>6g), which are less thermodynamically stable, the loss of the flange and creation of a core is inevitable. The flange may reform with further spalling resulting in conical core morphologies. If the button continues to ablate then end-members such as plates or bowls may form. Ablation, spalling and flange formation combine to produce unique tektite forms
FOR FUTHER READING
Cleverly, W. H. 1986. Australites from Hampton Hill Station, Western Australia. Journal of the Royal Society of Western Australia, Vol. 68, Part 4, p. 81-93.
McNamara, K. and Bevan, A. 1985 (2nd (revised) edition, 1991). Tektites. Western Australian Museum. pp. 28. (Currently in print!)
- SKU
- RG-5991
- 寸法(mm)
- 16.400 x 15.700 x 9.600 mm
- 重さ (CT)
- 12.250
- Treatment
- No Treatment
- タイプ
- Specimen
- 色
-
TEKTITE-COLLECTOR PC
WESTERN AUSTRALIA
TEKTITE FLANGE
PERFECT SHAPE
THE COME IN VARIOUS SHAPES AND SIZES SOME BEING VERY RARE
the original body (a sphere in this case) is interpreted to be solid or very close to solidification by re-entry stage. As the sphere re-enters it ablates and spalls. Spalling results in characteristic core shapes. Once ablation of material has crossed the equatorial margin of the specimen, a flange may begin to form. This leads to formation of ‘button’-type tektites. Further spalling may result in loss of the flange and creation of a lens. In larger specimens (>6g), which are less thermodynamically stable, the loss of the flange and creation of a core is inevitable. The flange may reform with further spalling resulting in conical core morphologies. If the button continues to ablate then end-members such as plates or bowls may form. Ablation, spalling and flange formation combine to produce unique tektite forms
FOR FUTHER READING
Cleverly, W. H. 1986. Australites from Hampton Hill Station, Western Australia. Journal of the Royal Society of Western Australia, Vol. 68, Part 4, p. 81-93.
McNamara, K. and Bevan, A. 1985 (2nd (revised) edition, 1991). Tektites. Western Australian Museum. pp. 28. (Currently in print!)
| 配送業者 | 配送先Australia | その他の国への配送 |
|---|---|---|
| Standard Shipping - Tracked | $19.00 / 7 | $30.00 / 14 |
|
：国
Standard Shipping - Tracked 、 2以上のアイテムを含む注文で$19.00に割引されます
世界のその他の地域
Standard Shipping - Tracked 、 2以上のアイテムを含む注文で$30.00に割引されます
|
||
| FedEx | $39.00 / 4 | $40.00 / 4 |
|
：国
FedEx 、 2以上のアイテムを含む注文で$39.00に割引されます
世界のその他の地域
FedEx 、 2以上のアイテムを含む注文で$40.00に割引されます
|
||
| DHL | $19.00 / 2 | $30.00 / 14 |
|
世界のその他の地域
DHL 、 2以上のアイテムを含む注文で$30.00に割引されます
|
||
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ポジティブI am a super happy customer with these beautiful rare turquoise gems. Accurate description, shipping was fast, just a little delivery issues here in my local city. otherwise very happy customer.
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ポジティブ
Just received my Ruby it’s a cute little thing. I believe my sister-in-law will like it took a minute to get here to the states, but I am happy with my purchase would buy from you again
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ポジティブ
Great piece of emerald. I have already faceted a 2.5 carat gem from it. Thankyou
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ポジティブ
Great colour change. Thankyou
