Palygorskite
A variety of Minerals
What is Palygorskite?
Palygorskite or attapulgite is a magnesium aluminium phyllosilicate with formula (Mg,Al)2Si4O10(OH)·4(H2O) that occurs in a type of clay soil common to the Southeastern United States. It is one of the types of fuller's earth. Some smaller deposits of this mineral can be found in Mexico, where its use is tied to the manufacture of Maya blue in pre-Columbian times.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Palygorskite 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.
Palygorskite Localities Map
See where Palygorskite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
The Meaning
Palygorskite clay, combined with indigo dyes, was used as an unusual blue pigment in the pre-Columbian era by the Maya civilization. Since the 4th Century, Maya blue pigment was widely used in pottery, paintings and murals. The dye also had an important role to play in the Mayan culture. It is believed that ancient Maya used this dye as sacrificial paint – they painted the bodies of victims before sacrificing them.
Quick Facts
Physical Properties
- Color
- White, grayish, yellowish, gray-green
- Hardness (Mohs)
- 2 - 2.5
- Density
- 2.35 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- (Mg,Al)2Si4O10(OH) · 4H2O
- Elements
- Al, H, Mg, O, Si
Also Known As
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Palygorskite FAQs
How do I identify Palygorskite?
Palygorskite can be identified by its hardness of 2 - 2.5 on the Mohs scale, White color. Look for these key characteristics when examining specimens.
What color is Palygorskite?
Palygorskite typically appears in White, grayish, yellowish, gray-green. Color can vary depending on impurities and formation conditions.
How hard is Palygorskite?
Palygorskite has a hardness of 2 - 2.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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