The competition between {1014} cleavage and {0112} steep rhombohedra in gel grown calcite crystals

被引：27

作者：

Pastero, L ^{[1
]}

Costa, E ^{[1
]}

Alessandria, B ^{[1
]}

Rubbo, M ^{[1
]}

Aquilano, D ^{[1
]}

机构：

[1] Univ Turin, Dipartimento Sci Mineral & Petrol, I-10125 Turin, Italy

来源：

JOURNAL OF CRYSTAL GROWTH | 2003年 / 247卷 / 3-4期

关键词：

crystal morphology; impurity adsorption; gel growth; calcite;

D O I：

10.1016/S0022-0248(02)01911-5

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Calcite crystals have been obtained from supersaturated solutions diffusing both in agarose and Na-metasilicate gels. Crystal morphology in agarose is characterized mainly by spherulites grown around solid gel impurities and terminated by the cleavage {1 0 (1) over bar 4} rhombohedron. Grown from Na-metasilicate gel, {1 0 (1) over bar 4} and {0 1 (1) over bar 2} rhombohedra compete according to the influence of pH and of the acidifying agent, HCl or CH3COOH, the latter favouring the appearance of the {0 1 (1) over bar 2} form. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：472 / 482

页数：11

共 14 条

[1]

[Anonymous], N JB MINER MH

[2] Hollow rhombohedral calcite crystals encompassing CO2 microcavities nucleated in solution [J].