Hodgkinsonite
Mineral MnZn2(SiO4)(OH)2
About it
Bright pink to reddish brown crystals known almost only from Franklin, New Jersey; named for the miner who first found it.
- Type
- Mineral
- Group
- Silicate (nesosilicate)
- Formula
- MnZn2(SiO4)(OH)2
- Hardness (Mohs)
- 4.5–5
- Specific gravity
- 4.06–4.08
- Streak
- white
- Lustre
- vitreous (glassy)
- Crystal system
- Monoclinic
- Colours
- bright pink, red, red-brown, orange
- Transparency
- transparent, translucent
- Cleavage and fracture
- perfect in one direction
Typical values: real specimens vary. For more, see mindat.org.