Number | Name | Date | Kind |
---|---|---|---|
4509219 | Yagi | Apr 1985 | A |
4680822 | Fujino | Jul 1987 | A |
5035017 | Komuro | Jul 1991 | A |
5601909 | Kubo | Feb 1997 | A |
5744222 | Sugihara | Apr 1998 | A |
Entry |
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BRITANNICA.COM, Tourmaline, Encyclopaedia Britannica Article, Website: www.Britannica.com. |
MINERALS.NET, Tourmaline Group, Article from www. minerals.net website. |
MINERALS.NET, Chemicals Formula of Tourmaline, Article from www. minerals.net website. |
MINERALS.NET, Silicates, Article from www. minerals.net website. |
MINERALS.NET, Cyclosilicates, Article from www. minerals.net website. |