description Franklinite Overview
Franklinite is a black, opaque zinc, manganese, and iron oxide mineral belonging to the spinel group. Its chemical composition is commonly represented by the formula (Zn,Mn,Fe)Fe2O4, although the proportions of the elements can vary. The mineral is strongly associated with the Franklin and Sterling Hill deposits in New Jersey, where it occurs with minerals such as willemite and calcite in a district known for fluorescent specimens.
help Franklinite FAQ
What is franklinite?
Franklinite is a black, opaque oxide mineral in the spinel group. Its composition is commonly represented as (Zn,Mn,Fe)Fe2O4, with the proportions varying between specimens.
Which elements are found in franklinite?
Franklinite contains zinc, manganese, and iron in its commonly used formula. The formula is written with parentheses because the relative amounts of zinc, manganese, and iron can vary.
What color and appearance does franklinite have?
It is typically black and opaque rather than transparent or brightly colored. Its dark appearance is one of the easiest field characteristics to notice.
What mineral group does franklinite belong to?
Franklinite belongs to the spinel group of minerals. This places it with oxide minerals that share related crystal structures and chemical patterns.
explore Explore More
Reviews & Comments
Write a Review
Be the first to review
Share your thoughts with the community and help others make better decisions.
