Search results
Results from the WOW.Com Content Network
Sodalite is a member of the sodalite group with hauyne, nosean, lazurite and tugtupite. The people of the Caral culture traded for sodalite from the Collao altiplano . [ 6 ] First discovered by Europeans in 1811 in the Ilimaussaq intrusive complex in Greenland , sodalite did not become widely important as an ornamental stone until 1891 when ...
Lazurite is a product of contact metamorphism of limestone and is typically associated with calcite, pyrite, diopside, humite, forsterite, hauyne and muscovite. [ 2 ] Other blue minerals, such as the carbonate mineral, azurite , and the phosphate mineral, lazulite , may be confused with lazurite, but are easily distinguished with careful ...
Haüyne or prismatic azure spar is a transparent or translucent mineral, similar to lazurite, in composition sodium and calcium aluminosilicate with the ideal formula (Na,Ca) 4-8 Al 6 Si 6 (O,S) 24 (SO 4,Cl) 1-2 having a blue or blue color, sometimes with a greenish tint, [5] was also known among the azure spars.
lazurite Na 3 Ca(Si 3 Al 3)O 12 S; tsaregorodtsevite N(CH 3) 4 Si 4 (SiAl)O 12; tugtupite Na 4 BeAlSi 4 O 12 Cl; vladimirivanovite Na Na 6 Ca 2 [Al 6 Si 6 O 24](SO 4,S 3,S 2,Cl) 2 ·H 2 O; All these minerals are feldspathoids. Haüyne forms a solid solution with nosean and with sodalite. Complete solid solution exists between synthetic nosean ...
Lazulite or Azure spar [6]: 14 is a transparent to semi-opaque, blue mineral that is a phosphate of magnesium, iron, and aluminium, with the chemical formula (Mg,Fe 2+)Al 2 (PO 4) 2 (OH) 2. [3]
Another Sar-e Sang Lazurite crystal, with the classic deep azure-blue color. Crystal is 4.5 cm wide. Sar-i Sang (or Sar-e Sang) (lit. "stone summit" in Persian) is a settlement in the Kuran Wa Munjan District of Badakhshan Province, Afghanistan, famous for its ancient lapis lazuli mines producing the world's finest lapis. [1]
The major component of lazurite is a complex sulfur-containing sodium-silicate (Na 8–10 Al 6 Si 6 O 24 S 2–4), which makes ultramarine the most complex of all mineral pigments. [10] Some chloride is often present in the crystal lattice as well. The blue color of the pigment is due to the S − 3 radical anion, which contains an unpaired ...
The room for arbitrage profit was further enlarged because of the silver content difference between silver ingots from Ming and Qing China and New World silver. [12] At the same time, China also made significant arbitrage earnings in the markets for silks, ceramics, and other non-silver goods, which formed a multiple arbitrage system. [ 11 ]