I AM MAKING DRP Chemical formula ZnCO3 Strung classification 05.AB.05 Crystal symmetry Trigonal 3 2/m Unit cell a = 4.6526(7) Å, c = 15.0257(22) Å; Z = 6 Identification Color White Crystal habit Uncommon as crystals, typically botryoidal, reniform, spherulitic; stalactitic, earthy, compact massive Crystal system Trigonal - Hexagonal Scalenohedral Twinning None observed Cleavage Perfect on [1011] Fracture Uneven, sub-conchoidal Tenacity Brittle Mohs scale hardness 4.5 Luster Vitreous, may be pearly Streak White Diaphaneity Translucent Specific gravity 4.4 - 4.5 Optical properties Uniaxial (-) Refractive index nω = 1.842 - 1.850 nε = 1.619 - 1.623 Birefringence δ = 0.223 - 0.227 fluorescence *********************

General Category tectosilicate Chemical formula KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8 Identification Color pink, white, gray, brown Crystal system triclinic or monoclinic Twinning tartan, carlsbad, etc Cleavage two or three Fracture along cleavage planes Mohs scale hardness 6.0-6.5 Luster Vitreous Streak white Diaphaneity opaque Specific gravity 2.55 - 2.76 Birefringence first order Pleochroism none Other characteristics exsolution lamella ************************************************* Sodium bicarbonate Sodium bicarbonate or sodium hydrogen carbonate is the chemical compound with the formula NaHCO3. Sodium bicarbonate is a white solid that is crystalline but often appears as a fine powder. Wikipedia Formula: NaHCO3 Molar mass: 84.007 g/mol IUPAC ID: Sodium hydrogen carbonate Density: 2.20 g/cm³ Melting point: 50° C Soluble in: Water ****************************** Symbol of Element : Ir Atomic Number : 77 Atomic Mass: 192.217 amu Melting Point: 2410.0 °C - 2683.15 °K Boiling Point: 4527.0 °C - 4800.15 °K Number of Protons/Electrons : 77 Number of Neutrons : 115 Crystal Structure: Cubic Density 293 K: 22.5 g/cm3 Color : whitish-yellow any need to mail me bhasabai786@gmail.com