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Brekke, Bamble (Bamle), Telemark, Norway

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List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX₂
Rutile	4.4.1.1	TiO₂
Group 52 - NESOSILICATES Insular SiO₄ Groups and O,OH,F,H₂O
Insular SiO₄ Groups and O, OH, F, and H₂O with cations in [4] and >[4] coordination
Kyanite	52.2.2c.1	Al₂(SiO₄)O
Sillimanite	52.2.2a.1	Al₂(SiO₄)O
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with Al substituted rings
Cordierite	61.2.1.1	(Mg,Fe)₂Al₃(AlSi₅O₁₈)
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Anthophyllite ?	66.1.2.1	☐{Mg₂}{Mg₅}(Si₈O₂₂)(OH)₂
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore	71.4.1.4	(Mg,Fe²⁺)₅Al(AlSi₃O₁₀)(OH)₈
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO₂ with [4] coordinated Si
Quartz	75.1.3.1	SiO₂
Unclassified Minerals
'Tourmaline'	-	A(D₃)G₆(T₆O₁₈)(BO₃)₃X₃Z

8 entries listed. 7 valid minerals.

References

- Erdmann, A. (1842): Undersökning af tvenne nye Mineralier, Praseolit och Esmarkit, Kongliga Svenska Vetenskaps-Akademiens Handlingar, 181-190
- Erdmann, A. (1842): Undersökning af några Lerjords-silikater. Bamlit, ett nytt mineral från Norrige. Kongliga Svenska Vetenskaps-Akademiens Handlingar, 19-21
- Weibye, P.C. (1848): Beiträge zur topographischen Mineralogie Norwegens. Archiv für Mineralogie, Geognosie, Bergbau und Hüttenkunde (C.J.B.Karsten und von Dechen) 22: 465-544

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