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You may return most new, unopened items within 14 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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Buy 282 Grams Mangano Tantalite-(Mn) on White Albite from Chappa Darrah Mine, Darai Paech, Nuristan Province, Afghanistan which is for sale at wholesale price.
| Weight | 282 Grams |
|---|---|
| Specimen Dimensions | 6 x 6 x 5.8 cm |
| Crystal Dimensions | 2.5 x 2.2 x 1.5 cm |
| Locality | Chappa Darrah Mine, Darai Paech, Nuristan Province, Afghanistan |
| Crystal Diaphaneity | Translucent |
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Single well-formed tabular crystal of Tantalite-(Mn) from the Chappa Darrah, Nuristan Afghanistan. The Tantalite crystal measuring 2.5 x 2.2 x 1.5 cm with a very dark deep red, almost black color, and displays of maroon red in some areas, to get that kind of piece with no damage or repair from such locality is very uncommon.
Tantalite is the name assigned to a group of related minerals containing oxygen, tantalum, and a metal such as Manganese or Iron. Generally, mangan-dominant members are richer in nature. Many specimens called Tantalite belong to the Tapiolite or columbite series. Columbite is the niobium-rich member, and Tantalite is the tantalum-rich member. It is named after its tantalum content, and, together with Columbite, are the rarest minerals containing the rare element tantalum.
The name Tantalite has been defamed by the IMA (International Mineralogical Association), with the more specific designations of Tantalite-(Fe) (Ferrotantalite), and Tantalite-(Mn) (Mangano Tantalite) being used for this minerals. Ferrotantalite is always dark and opaque, while Mangano Tantalite is usually reddish-brown and may manifest transparency. An even rarer member of this series is Tantalite-(Mg), a magnesium-rich member.
|
Varieties |
Mangano Tantalite |
|
Chemical Formula |
(Fe, Mn) (Ta, Nb)2 O6 |
|
Mohs Hardness |
6 – 6.5 |
|
Crystal System |
Orthorhombic |
|
Color |
Red-brown, brown, black |
|
Transparency |
Transparent |
|
Lustre |
Submetallic |
Mangano Tantalite: Mangano Tantalite is a manganese-rich variety of Tantalite. It is formed when manganese replaces iron. Manganotantalite is an intense red transparent material that is suitable for cutting into magnificent faceted gems.
|
Other Names |
Tantalite – (Mn) |
|
Chemical Formula |
MnTa2 O6 |
|
Mohs Hardness |
6 – 6.5 |
|
Crystal System |
Orthorhombic |
|
Color |
Scarlet-red to dark red |
|
Transparency |
Transparent |
|
Lustre |
Vitreous |
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You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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