Carbonate Minerals
D60 (1)

Carbonates

Calcite on Galena

Calcite on Galena

Bleiberg, Austria

Calcite:Found in sedimentary, igneous, and metamorphic rocks. Found in most geologic settings and as a later forming replacement mineral in most other environments in one form or another, it is most common as massive material in limestones and marbles. It forms as chemical sedimentary deposits as limestone, can be regionally or contact metamorphosed into marbles and rarely forms igneous rocks (carbonatites). Also is a common gangue mineral in hydrothermal deposits. Galena:Lead sulfide ore veins, and disseminated in igneous and sedimentary rocks. in ore veins with sphalerite, pyrite, chalcopyrite, fahlore etc., and in sedimentary rocks as beds or impregmentations.

Calcite:Found in sedimentary, igneous, and metamorphic rocks.Found in most geologic settings and as a later forming replacement mineral in most other environments in one form or another, it is most common as massive material in limestones and marbles. It forms as chemical sedimentary deposits as limestone, can be regionally or contact metamorphosed into marbles and rarely forms igneous rocks (carbonatites). Also is a common gangue mineral in hydrothermal deposits. Galena:Lead sulfide ore veins, and disseminated in igneous and sedimentary rocks.In ore veins with sphalerite, pyrite, chalcopyrite, fahlore etc., and in sedimentary rocks as beds or impregmentations.

CaCO3 - PbS

Calcite:Trigonal Galena:Isometric

Calcite:Hexagonal Scalenohedral Galena:Hexoctahedral

https://pergamos.lib.uoa.gr/uoa/dl/object/141667