Franklinite

A variety of Spinel Subgroup

Rare
Franklinite specimen - rock identification

What is Franklinite?

Franklinite is named after Franklin, New Jersey which is where it was discovered. This mineral is geographically limited to Franklin and neighboring Ogdensburg. This mineral is used as an ore of zinc and manganese, which are two important industrial metals. Specimens of this rare mineral are highly valued by mineral collectors.

Uses & Applications

Franklinite is an ore of zinc, a material used industrially to galvanize steel and other metals, to produce alloys and die-castings, and to make a variety of products including paint, rubber, pharmaceuticals, plastics, batteries, and electronics. Franklinite has also been known to be an ore of small amounts of uranium, sulfuric acid, and mercury.

Healing Properties

If you're losing your hair, franklinite supposedly encourages hair growth. This stone is also believed to be beneficial for male reproductive difficulties and to heal eye disorders. Franklinite is said to connect with the base chakra, having a grounding effect on the possessor, and the stone's vibration is believed to stimulate self-expression and bring about novel ideas.

Optical Properties

Optical Character
Isotropic

Franklinite Market Value Calculator

Estimate the market value of Franklinite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Preview only. Full pricing comps and valuation report in the app.

Franklinite Localities Map

See where Franklinite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

The Meaning

Franklinite is New Jersey's official state mineral.

Associated Chakras

Root
Root

More Images

Franklinite specimen 2
© Islam90

Quick Facts

Physical Properties

Color
Black
Hardness (Mohs)
5.5 - 6
Density
5.163 g/cm³
Streak
Reddish brown to black
Luster
Metallic, Sub-metallic
Crystal System
Isometric

Chemical Properties

Chemical Formula
Zn2+Fe3+2O4
Elements
Fe, O, Zn

Also Known As

FrankliniteMagnofrankliniteFrancklinite
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