Sussexite
A variety of Minerals
What is Sussexite?
Sussexite is a manganese borate mineral MnBO2(OH). Crystals are monoclinic prismatic and typically fibrous in occurrence. Colour is white, pink, yellowish white with a pearly lustre. It has a Mohs hardness of 3 and a specific gravity of 3.12. It is named after the Franklin Mining District in Sussex County, New Jersey, US where it was first discovered in 1868. Sussexite also occurs in France, Italy, Namibia, North Korea, South Africa, Switzerland, and the US states of Michigan, New Jersey, Utah and Virginia.
Optical Properties
- Optical Character
- Biaxial negative
- Dispersion
- 1.670-1.732
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Sussexite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Sussexite Localities Map
See where Sussexite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- White, lilac, black, golden-brown, colourless in transmitted light
- Hardness (Mohs)
- 3
- Density
- 3.43 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- Mn2+BO2(OH)
- Elements
- B, H, Mn, O
Identify Sussexite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
Sussexite FAQs
How do I identify Sussexite?
Sussexite can be identified by its hardness of 3 on the Mohs scale, White color. Look for these key characteristics when examining specimens.
What color is Sussexite?
Sussexite typically appears in White, lilac, black, golden-brown, colourless in transmitted light. Color can vary depending on impurities and formation conditions.
How hard is Sussexite?
Sussexite has a hardness of 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
%252FAbenakiite-(ce)-01.jpg&size=small)
