
The Mineral NEALITE

- Chemistry: Pb4Fe(AsO4)2Cl4 , Lead Iron Arsenate Chloride
- Class: Phosphates
- Subclass: Arsenates
- Uses: Only as mineral specimens.
- Specimens
Nealite is a very rare mineral. It was named for an American mineral collector, Neal Yedlin. Nealite is known from one locality, its type locality of
Nealite has a bright and attractive color. It is found only in microcrystals and is very hard to obtain for one's collection. But its beauty, rarity and interesting origin make it a very desirable mineral, especially for micromounters.
PHYSICAL CHARACTERISTICS:
- Color is typically orange, also yellow.
- Luster is vitreous.
- Transparency: Crystals are transparent to translucent.
- Crystal System is trigonal.
- Crystal Habits include platy prismatic to acicular crystals with a sharp domal termination.
- Cleavage is absent.
- Fracture is uneven.
- Hardness is 4
- Specific Gravity is approximately 5.88 (well above average for translucent minerals)
- Streak is a pale orange yellow.
- Other Characteristics: Crystals are brittle.
- Associated Minerals include
paralaurionite ,georgiadesite and other rare lead slag minerals. - Notable Occurrences are limited to the type locality of
Lavrio (formerly Lavrion and Laurium), Greece. - Best Field Indicators are color, crystal habit, high density, brittleness and locality.
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