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1.10 Carats Tantalite Gemstone
- 存货单位
- 尺寸（毫米）
- 5.650 x 3.510 x 2.300mm
- 重量 (cts)
- 1.100
- 类型
- Faceted
- 颜色
-
mineral group tantalite [(Fe, Mn)Ta2O6] is the primary source of the chemical element tantalum, a corrosion (heat and acid) resistant metal. It is chemically similar to columbite, and the two are often grouped together as a semi-singular mineral called coltan or "columbite-tantalite" in many mineral guides. However, tantalite has a much greater specific gravity than columbite (8.0+ compared to columbite's 5.2).[3] Iron-rich tantalite is the mineral tantalite-(Fe) or ferrotantalite and manganese-rich is tantalite-(Mn) or manganotantalite.
- 存货单位
- 尺寸（毫米）
- 5.650 x 3.510 x 2.300 mm
- 重量 (cts)
- 1.100
- 类型
- Faceted
- 颜色
-
mineral group tantalite [(Fe, Mn)Ta2O6] is the primary source of the chemical element tantalum, a corrosion (heat and acid) resistant metal. It is chemically similar to columbite, and the two are often grouped together as a semi-singular mineral called coltan or "columbite-tantalite" in many mineral guides. However, tantalite has a much greater specific gravity than columbite (8.0+ compared to columbite's 5.2).[3] Iron-rich tantalite is the mineral tantalite-(Fe) or ferrotantalite and manganese-rich is tantalite-(Mn) or manganotantalite.
| 运输商 | 运送至：国家 | 运送到世界其他地区 |
|---|---|---|
| Standard Shipping - Tracked | $18.00 / ：几天天 | $18.00 / ：几天天 |
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：国家
Standard Shipping - Tracked 对包含 2 或更多商品的订单折扣为 $22.00
世界其他地区
Standard Shipping - Tracked 对包含 2 或更多商品的订单折扣为 $22.00
|
||
| DHL | $28.00 / ：几天天 | $28.00 / ：几天天 |
|
：国家
DHL 对包含 2 或更多商品的订单折扣为 $38.00
世界其他地区
DHL 对包含 2 或更多商品的订单折扣为 $38.00
|
||
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积极的Very nice tantalite and a much welcome addition to my hobby-collection. Thank you very much!
-
积极的
Good stone
-
中性的
Not that beautifull.
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