You can use non-lead fishing sinkers for example, Eagle Claw makes non-lead sinkers using bismuth , you can use non-lead ammunition the shot will say it is made from bismuth on the label , or you can buy bismuth metal.
Although bismuth is much less toxic than other heavy metals , it's not exactly something you want to eat. One way to be certain of the purity is to remelt a crystal of bismuth.
Generally, slower cooling produces larger crystals. Simov, S.
If you have trouble getting the bismuth crystal out of the container, you might try remelting the meta and pouring it into a flexible silicone rubber container. Growing Bismuth Crystal Materials: Updated September 19, 2018. Growth, 43, p.
Here are the steps in detail: Origin of the Salina salt of Michigan, J. Science Activities for Every Subject.
Petrogenetic significance of pyroxenes in two Apollo 12 samples, Proc. Crystals and Crystal Growing. Once the crystals have cooled, you can snap them out of the metal container. Contents Search. Kinetics and Mechanism of Crystallization.
It's a good idea to wear gloves since you are producing a molten metal, which is not going to do you any favors if it splashes onto your skin. Mineral Recognition. The crystals have a complex and fascinating geometric hopper form and are rainbow-colored from the oxide layer that quickly forms on them. Van Hook, A. Bismuth is readily available from online retailers, such as Amazon.
Otherwise, you'd do well to read product reviews from a supplier to learn whether or not the product is pure enough for crystallization.
A skeletal crystal is one that develops under conditions of rapid growth and high degree of supersaturation. You want to pour the clean bismuth out from under the gray skin, which contains impurities which would negatively affect your crystals.
Stability of faceted shapes, J.