The story
After the beginnings of magnetite and hematite in 1927, because of magnetism and similar arrangement of elements.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A magnetic mineral with a grey blue, white, or brown shade. Full definition →
After the beginnings of magnetite and hematite in 1927, because of magnetism and similar arrangement of elements.
Etymology from Wiktionary, CC BY-SA 4.0.