|Name:||Shum Tsoi Tin|
|Year:||2017 – 2018|
|Geological Age: (Fossil) (Rock)
Chemical composition, bonding and structure: (Mineral)
Marble is formed by limestone which is a sedimentary rock, it is due to weathering breaks down the rock that is transported and deposited as sediment, when sediment is buried, it compacted and cemented to form sedimentary rock (limestone). Metamorphic rock (marble) usually located at the zone where the magma intrusion touches the existing rock, where volcanism and crustal movement occur, when the rock is subject to high temperature and high pressure, metamorphism changes the texture and mineral composition of the rock, since high temperature can make the rock crystals melt and recrystallize into new rock, forming metamorphic rock (marble).
Living Specimens: (Fossil)
It have different texture and chemical composition, is it crystalline and it has shiny appearance.
|Application: (Rock) (Mineral)
Marble is an important stone, after polishing, it has lots of different uses. For examples, the floor and wall of building or the statue of monumental building and even carved into a craftwork, such as stationery and lamps. Also, the crushed stone left after mining and processing can be used for fillers in plastics, rubber and other industries.
|Distribution: (Rock) (Mineral)
In marbles formed from relatively pure carbonate rocks, calcite and dolomite account for more than 90%, and sometimes they can contain few graphite, muscovite, magnetite, pyrite, etc. Under low temperature and high pressure, the rock can be transformed. Cheng Wenshi;The marbles formed from tantalum-bearing carbonate rocks may contain talc, tremolite, actinolite, quartz, etc. at medium and low temperatures. Diopside, orthopyroxene, and forsterite may be present at high temperatures. , Wollastonite, periclase, etc., In the high temperature and low pressure conditions, there may appear granulite, calcareous olivine, feldspar and so on;Marbles formed from argillaceous carbonate rocks may contain serpentine, chlorite, epidote, eucalyptus, fushan, biotite, acid plagioclase, microcline, etc. at medium and low temperatures. In high temperature, it may contain sibisite, Calcium Almanite, Cericite, Phlogopite, Spinel, Apatite, Basic plagioclase, and Orthoclase.
|More to learn:
The content of calcite and dolomite inside the marble is generally greater than 50%, and some are up to 99%. Reaction with hydrochloric acid to produce carbon dioxide