An example of a mineral in iron-rich rock containing carbonates is siderite and an example of minerals in an iron-rich rock containing silicate is chamosite.
en.wikipedia.org On large specimens, the faces exhibit a mosaic structure similar to that in some specimens of dolomite and siderite.
en.wikipedia.org It commonly occurs with galena, tetrahedrite, sphalerite, chalcopyrite, pyrite, stibnite, zinkenite, siderite, quartz, rhodochrosite, dolomite and barite.
en.wikipedia.org It occurs associated with quartz, siderite, stilpnomelane, greenalite and magnetite.
en.wikipedia.org The deeply weathered lavas retain their original textures but have been pervasively stained and altered to earthy hematite and siderite.
en.wikipedia.org