collection of various brown raw stones with names

amosite asbestos astrophyllite background basalt bauxite bog brown cassiterite chondrodite collage collection crystal cuprite cut cutout description eye flint glassbasalt hematite hyalobasalt iron isolated limonite mica mineral muscovite name natrolite natural ore out quartz rauchtopaz raw rock rough sample set smoky specimen spreusteine staurolite stone tiger tigereye tigers unpolished urtite various white