Tin is a relatively scarce element with an abundance in the earth's crust of about 2 parts per million (ppm), compared with 94 ppm for zinc, 63 ppm for copper, and 12 ppm for lead. Most of the world's tin is produced from placer deposits; at least one-half comes from Southeast Asia.
Tin: 7280: Titanium: 4500: Tungsten: 19600: Uranium: 18900: Vanadium: 5494: White metal: 7100: Wrought Iron: 7750: Zinc: 7135: Yellow Brass: 8470
40 units of lead + 1 unit of tin = 41 units of alloy 20 units of lead + 0.5 units of tin = 20.5 units of alloy 3/24/17 Update Information: After experimenting with weight variations in cast bullets it became clear that unseen voids in bullets have a direct affect on measurements of specific gravity (SG).
Cassiterite has a high specific gravity (6.8—7.1) and a Moh’s scale hardness of 6 to 7 and is usually a dark-brown or black color with an adamantine luster. Most lode tin deposits occur as greisen, replacement, skarn, or vein-type deposits associated with granitic rocks or their extrusive