Phlogopite Mica In Orange Calcite Natural Mineral From Erongo Region Namibia
Size-
8.1cm x 7.6cm x 4.6cm
Weight-
245g
You will receive the item in the photo
Phlogopite mica and orange calcite naturally occur together as striking mineral specimens,forming fascinating geological pairings.
Phlogopite mica:
Mineral class- Silicate
Crystal system- monoclinic
Rock formation- occurs in both igneous and metamorphic rocks. It is primary mineral in ultramafic rocks like kimberlites, and is common found in contact metamorphic rocks,particularly silica rich dolomitic marbles
Hardness- 2.5-3 on the MOHs scale
Orange calcite:
Mineral class- Carbonate
Crystal system- Trigonal
Hardness- 3 on the MOHs scale
Rock formation- forms via sedimentary and secondary processes,most commonly through the accumulation of marine organism shells/skeletons and precipitation l. When exposed to extreme heat and pressure it alters into metamorphic rocks (marble) l. The orange colour is a result of trace iron impurities such as hematite.
