Archerite
A variety of Minerals
What is Archerite?
Archerite is a phosphate mineral with chemical formula (K,NH4)H2PO4. It's named after Michael Archer (born 25 March 1945), professor of Biology, University of New South Wales. Its type locality is Petrogale Cave, Madura Roadhouse, Dundas Shire, Western Australia. It occurs in guano containing caves as wall encrustations and stalactites.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Archerite 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.
Archerite Localities Map
See where Archerite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- White
- Hardness (Mohs)
- 1 - 2
- Density
- 2.23 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- (K,NH4)(H2PO4)
- Elements
- H, K, O, P
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Archerite FAQs
How do I identify Archerite?
Archerite can be identified by its hardness of 1 - 2 on the Mohs scale, White color. Look for these key characteristics when examining specimens.
What color is Archerite?
Archerite typically appears in White. Color can vary depending on impurities and formation conditions.
How hard is Archerite?
Archerite has a hardness of 1 - 2 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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