Tyuyamunite
Ca(UO₂)₂(VO₄)₂·5-8H₂O
Phosphates
Hardness —
· Orthorhombic
Photo: Sergio Varvello · CC0
Jahnsite-(MnMnMg)
Mn²⁺Mn²⁺Mg₂Fe³⁺₂(PO₄)₄(OH)₂(H₂O)₈
Phosphate mineral
Properties
- Chemical formula
- Mn²⁺Mn²⁺Mg₂Fe³⁺₂(PO₄)₄(OH)₂(H₂O)₈
- Group
- Phosphates
- Crystal system
- Monoclinic
- Hardness (Mohs)
- —
- Color
- —
- Luster
- —
- Streak
- —
- Density
- —
- Cleavage
- —
- Fracture
- —
- Tenacity
- —
- Crystal habit
- —
- Transparency
- —
- Space group
- P2/a
- Fluorescence
- —
- Magnetism
- —
- Radioactivity
- —
- Refractive index
- —
- Optical character
- —
- Birefringence
- —
- Pleochroism
- —
- Strunz classification
- —
- Dana classification
- —
- IMA status
- Approved mineral and/or valid name (A)
- IMA symbol
- Jah-MnMnMg
- Locality
- 🇧🇷 Sapucaia do Norte
- Type locality
- —
- Discovery year
- —
Etymology
Named after jahnsite
Source: Wikidata
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