manganese

a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals

इसे मैग्नीशिया नाम के शहर के पास की काली मिट्टी से खोजा गया था. अतः इसे नाम दिया गया था 'मैग्नीसिया निग्रा'. संक्षिप्तः मैंगनीज

It was discovered near a town named Magnesia in black earth. Thus, it was named 'magnesia nigra', or for short, Manganese.