Fillowite
A variety of Fillowite Group
What is Fillowite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Fillowite 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.
Fillowite Localities Map
See where Fillowite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Greenish yellow to yellow green, yellowish brown, reddish brown; colourless; colourless to yellow in transmitted light.
- Hardness (Mohs)
- 4.5
- Density
- 3.48 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- Na3CaMn2+11(PO4)9 formerly given, i.a., as: {Mn2+}{Na8}{Ca4Na4}{(Mn2+,Fe2+)43}(PO4)36; the above IMA formula is wrong
- Elements
- Ca, Mn, Na, O, P
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Fillowite FAQs
How do I identify Fillowite?
Fillowite can be identified by its hardness of 4.5 on the Mohs scale, Greenish yellow to yellow green color. Look for these key characteristics when examining specimens.
What color is Fillowite?
Fillowite typically appears in Greenish yellow to yellow green, yellowish brown, reddish brown; colourless; colourless to yellow in transmitted light.. Color can vary depending on impurities and formation conditions.
How hard is Fillowite?
Fillowite has a hardness of 4.5 on the Mohs scale. This gives it moderate hardness.