Picropharmacolite specimens for sale
3 for sale · $120–$540 USD
8 in the gallery
Picropharmacolite is a hydrated phosphate mineral with a triclinic crystal system and a very soft Mohs hardness of 1–2. It typically forms in pale, pearly masses or fibers, often appearing translucent to transparent with a white appearance and a white streak. The mineral is known for its botryoidal and radiating habits, and it may exhibit a pearly to vitreous luster under suitable light. Its distinctive fluorescence adds a striking feature to many collections, emitting white, blue, or violet hues when exposed to ultraviolet light.
- Formula
- Ca4Mg(AsO3OH)2(AsO4)2·11(H2O)
- Classification notes
- Hydrated Acid Phosphates, etc
Key characteristics
- Crystal system
- triclinic
- Mohs hardness
- 1–2
- Specific gravity
- 2.58
- Luster
- pearly
- Transparency
- transparent, translucent
- Color
- colorless, white
- Streak
- white
- Cleavage
- perfect
- Crystal habit
- botryoidal, fibrous, radiating
- Fluorescent: white, blue, violet
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Where Picropharmacolite is found
Top localities
- Shimen Mine2 specimens
- Aghbar Mine1 specimen
About Picropharmacolite
Notable localities include China and Morocco, where specimens have been recovered in various hydrothermal or secondary phosphates contexts, contributing to the mineral’s presence in museum and collection drawers alike. Collectors appreciate its delicate color and unusual habit, as well as the interplay of fluorescence with its otherwise subdued appearance. While it is a relatively soft mineral, its crystalline forms and fibrous aggregates offer compelling textures for display and study, making it a valued addition for those focused on phosphate minerals and hydration-related species.