Talk:Silicate minerals

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WikiProject Geology (Rated Start-class, Mid-importance)
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WikiProject Rocks and minerals (Rated Start-class, Mid-importance)
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Diagrams?[edit]

Just a friendly suggestion to the editors. It's not entirely clear what these structures look like from the written descriptions. Diagrams would be helpful. MAzari 03:28, 30 October 2006 (UTC)

Analcime[edit]

Analcime appears twice. As part of the Feldspathoid group and as a stand alone mineral in the Tectosilicates subclass. Which one should be deleted? Avihu (talk) 10:32, 20 April 2008 (UTC)

Removed from the feldspathoid group. The classification was originally set up following the Hurlbut and Klein reference which lists analcime separately. I note that the online refs include it in the zeolite group as the analcime article says (with qualification). Vsmith (talk) 14:08, 20 April 2008 (UTC)

Albite[edit]

Albite appears twice: First, as part of the alkali-feldspars; second, as part of the plagioclase feldspars. Which one should be deleted? (My imperfect memory is, albite belongs to the second group, but not the first.) Someone please check and fix. The feldspars are really common, and it's really important for Wikipedia to get this right. Oaklandguy (talk) 17:37, 28 August 2013 (UTC)

Discrete SiO4 4- ions in neso silicates[edit]

Aren't neso silicates such as phenakite better described as containing close packed oxide ions with silicon in tetrahedral positions, rather than as containing discrete SiO44- ions with interstitial cations? Surely these are mixed oxides. Axiosaurus (talk) 09:38, 8 February 2013 (UTC)

It doesn't make a difference as it is a continous crystalline network with a repeating unit. --Chris.urs-o (talk) 03:39, 10 February 2013 (UTC)
Yes obviously, neso-silicates are after all crystalline! Saying there are discrete SiO44- ions with interstitial cations, is very different from saying there are Si atoms in tetrahedral positions in a close packed structure. Axiosaurus (talk) 16:38, 11 February 2013 (UTC)
Rruff (IMA) says the repeating unit is Be2SiO4, CNMNC's (IMA) master list (2012 version) says the same. --Chris.urs-o (talk) 15:22, 13 February 2013 (UTC)