Complete Information Guide to Rocks, Minerals, & Gemstones. The tetrahedrite Mineral Series. The Tetrahedrite series is composed of two member minerals: Tetrahedrite, the antimony-rich end member, and Tennantite, the arsenic-rich end member. Tetrahedrite is the more common member of this series, and is also the most common sulfosalt mineral. This page discusses Tetrahedrite; Tennantite has its own dedicated page. The most common crystal habit for Tetrahedrite is tetrahedral, which describes an unusual triangular crystal form.
What does it look like? The type of Blues Dancing that we do is centered on very strong partner connection with the basis being pulsing weight changes. The current form of Blues actually evolved out of the Swing/Jazz partner dancing scene, though original Blues Dancing is actually one of the parents to Swing and Jazz.
This will leave them in a new order, and the dance is repeated enough times to bring them back to their starting positions, with everyone dancing each position in turn. SCD is mainly danced socially, for pleasure and enjoyment, but many groups also perform; there are even occasional competitions. There can be no dancing without music, and SCD has attracted some of the most talented musicians to play for it.