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Mineralpedia Details for Hendricksite
Hendricksite
![Hendricksite](/images/products/hendricksite34683b.jpg?maxwidth=180&maxheight=180&crop=auto)
Phyllosilicate - Monoclinic - Mica group member. Ordinary (True or Common) Mica - Trioctahderal. Zinc occupies the (M) octahedral sites between the layers of (T) sites of Si and Al. K is the interlayer, making this an ordinary (True) mica. For more information on Mica minerals and other phyllosilicates please reference our article - Click Here.
Hendricksite is the only zinc bearing mica. Occurs as plate-shaped or short prismatic crystals with rough terminations up to 40cm with a copper deep red to blackish red color. (Bernard & Hrysl). As pointed out by Reider et al (Can Min.), Hendricksite could be included in a solid solution series with "zincohendricksite" and "manganoanhendricksite" at the ends.
Phyllosilicate - Monoclinic - Mica group member. Ordinary (True or Common) Mica - Trioctahderal. Zinc occupies the (M) octahedral sites between the layers of (T) sites of Si and Al. K is the interlayer, making this an ordinary (True) mica. For more information on Mica minerals and other phyllosilicates please reference our article - Click Here.
Occurs as plate-shaped or short prismatic crystals with rough terminations up to 40cm with a copper deep red to blackish red color. (Bernard & Hrysl). As pointed out by Reider et al (Can Min.), Hendricksite could be included in a solid solution series with "zincohendricksite" and "manganoanhendricksite" at the ends.
- Formula
- KZn3(Si3Al)O10(OH)2
- Crystal System
- Monoclinic
- Crystal Habit
- Euhedral Crystals, Aggregates, Foliated
- Cleavage
- Perfect, None, None
- Color
- copper brown, red, reddish black
- Streak
- red brown
- Class
- Monoclinic - Prismatic
- Hardness
- 2.5-3
- WebMineral
- View Hendricksite
- Mindat
- View Hendricksite
Hendricksite from Franklin, Sussex Co., New Jersey, United States
![Hendricksite
from Franklin, Sussex Co., New Jersey, United States](/images/products/hendricksite34683b.jpg?width=120&maxheight=120&crop=auto)
- Special Info
- Type Locality
Phyllosilicate - Monoclinic - Mica group member. Ordinary (True or Common) Mica - Trioctahderal. Zinc occupies the (M) octahedral sites between the layers of (T) sites of Si and Al. K is the interlayer, making this an ordinary (True) mica. For more information on Mica minerals and other phyllosilicates please reference our article - Click Here.
Hendricksite is the only zinc bearing mica.
Occurs as plate-shaped or short prismatic crystals with rough terminations up to 40cm with a copper deep red to blackish red color. (Bernard & Hrysl). As pointed out by Reider et al (Can Min.), Hendricksite could be included in a solid solution series with "zincohendricksite" and "manganoanhendricksite" at the ends.
This is a large impressive specimen with large crystal sheets. Occurs in only a handful of worldwide localities.