Wikidata facts
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- IMA Mineral Symbol
- Btk
- chemical formula
- PbFeGe(Ge₂O₇)(OH)₂·H₂O
- Nickel-Strunz 9th edition (updated 2009)
- 9.JA.10
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.JO.10
- crystal system
- monoclinic crystal system
- streak color
- white
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