Manganotantalite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
5.5 – 6.5
Specific Gravity
7.73 – 7.97
Refractive Index
2.19 – 2.34
Crystal System
Orthorhombic
Luster
Vitreous
Cleavage
Perfect
Color
various
Birefringence
0.015
Mohs Hardness
| Mohs | Reference mineral | Manganotantalite |
|---|---|---|
| 1 | Talc | |
| 2 | Gypsum | |
| 3 | Calcite | |
| 4 | Fluorite | |
| 5 | Apatite | |
| 6 | Orthoclase | ● |
| 7 | Quartz | |
| 8 | Topaz | |
| 9 | Corundum | |
| 10 | Diamond |
Crystal System
Value & Market
Price Tier
Budget (< $50/ct)
Where to Buy Manganotantalite
Blue Nile
Fine jewelry retailer
James Allen
Gemstone jewelry
Brilliant Earth
Ethically sourced gems
Amazon
Wide selection
Links may earn a commission at no extra cost to you.
About Manganotantalite
マンガノタンタライトは、マンガン・タンタルの酸化物鉱物（タンタライト族）で、黒色から黒褐色・濃茶色の菱形柱状結晶として産し、半金属光沢から亜金属光沢を呈します。リチウム質花崗岩ペグマタイトに産し、希少金属タンタルの重要な鉱石の一つです。ブラジル・ナイジェリア・モザンビーク・マダガスカルが主要産地として知られ、透明度の高い切り石はコレクター向けの極希少品です。
On this page
Jewelry Use
Durability
4/10
Science FYI Family
Frequently Asked Questions
What is Manganotantalite?
マンガノタンタライトは、マンガン・タンタルの酸化物鉱物（タンタライト族）で、黒色から黒褐色・濃茶色の菱形柱状結晶として産し、半金属光沢から亜金属光沢を呈します。リチウム質花崗岩ペグマタイトに産し、希少金属タンタルの重要な鉱石の一つです。ブラジル・ナイジェリア・モザンビーク・マダガスカルが主要産地として知られ、透明度の高い切り石はコレクター向けの極希少品です。
What is the hardness of Manganotantalite?
Manganotantalite has a Mohs hardness of 5.5 to 6.5, making it moderate for use in jewelry.
What color is Manganotantalite?
Manganotantalite is primarily Various.
How much does Manganotantalite cost?
Manganotantalite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Manganotantalite?
Manganotantalite belongs to the Orthorhombic crystal system.