Gugiaite is a melilite mineral, named for the Chinese village of Gugia where it was first discovered. Its chemical formula is Ca2BeSi2O7. It occurs mostly in skarns with melanite adjacent to an alkali syenite and has no economic value. Its crystals are small tetragonal tablets with vitreous luster and perfect cleavage. It is colorless and transparent with a density of three. The mineral belongs to space group P-421m and is strongly piezoelectric.
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| - Gugiaïta (ca)
- Gugiaite (en)
- Gugiaita (eu)
- Gugiaïte (fr)
- Gugiaite (it)
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| - La gugiaïta és un mineral de la classe dels silicats, que pertany al grup de la mel·lilita. Rep el seu nom de la localitat on va ser descoberta, Gugia, a la República Popular de la Xina. (ca)
- Gugiaita silikato motako minerala da eta melilite taldearen kidea da. (eu)
- La gugiaïte est un minéral de la classe des silicates, qui appartient au groupe de la mélilite. Il est nommé d'après la localité où il a été découvert, Gugia, en Chine. (fr)
- La gugiaite è un minerale appartenente al gruppo della melilite. (it)
- Gugiaite is a melilite mineral, named for the Chinese village of Gugia where it was first discovered. Its chemical formula is Ca2BeSi2O7. It occurs mostly in skarns with melanite adjacent to an alkali syenite and has no economic value. Its crystals are small tetragonal tablets with vitreous luster and perfect cleavage. It is colorless and transparent with a density of three. The mineral belongs to space group P-421m and is strongly piezoelectric. (en)
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| streak
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| strunz
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| unit cell
| - a = 7.43, c = 5.024 [Å]; Z = 2 (en)
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| - H-M symbol: (en)
- Scalenohedral (en)
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| - strongly piezoelectric (en)
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| - La gugiaïta és un mineral de la classe dels silicats, que pertany al grup de la mel·lilita. Rep el seu nom de la localitat on va ser descoberta, Gugia, a la República Popular de la Xina. (ca)
- Gugiaite is a melilite mineral, named for the Chinese village of Gugia where it was first discovered. Its chemical formula is Ca2BeSi2O7. It occurs mostly in skarns with melanite adjacent to an alkali syenite and has no economic value. Its crystals are small tetragonal tablets with vitreous luster and perfect cleavage. It is colorless and transparent with a density of three. The mineral belongs to space group P-421m and is strongly piezoelectric. Shortly after the discovery of gugiaite, it was noted that a new name was unnecessary as it could have been considered an end member of , (Ca,Na)2Be(Si,Al)2(O,F)2 differing mainly in containing much less Na and F (Fleischer 1963). Recent data have confirmed that gugiaite differs from meliphanite optically and structurally (Grice and Hawthorne 2002). Gugiaite is a melilite and is distinctly different from other beryllium minerals such as meliphanite and leucophanite (Grice and Hawthorne 2002). Gugiaite is named for its locality near the village of Gugia, China (Peng et al. 1962). Incongruent information exists regarding Gugia; consequently the actual location of this village within China is unclear (de Fourestier 2005). Gujia is most often referenced as being in either Jiangsu Province or Liaoning Province (Yang et al. 2001; Mandarino 2005). (en)
- Gugiaita silikato motako minerala da eta melilite taldearen kidea da. (eu)
- La gugiaïte est un minéral de la classe des silicates, qui appartient au groupe de la mélilite. Il est nommé d'après la localité où il a été découvert, Gugia, en Chine. (fr)
- La gugiaite è un minerale appartenente al gruppo della melilite. (it)
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| birefringence
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| cleavage
| - Perfect on {010}, distinct {001}, indistinct on {110} (en)
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| - Uneven - Flat surfaces fractured in an uneven pattern (en)
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