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.
The blues is mostly about the blues scale, 12 bars and the I-IV-V chord progression. Most blues boils down to these three elements - most, but not all. There are so many sub-genres in Blues, it is difficult to name them all, but suffice it to say the R&B, Rock-n-Roll and Soul music are the direct descendants of the blues. There is also Jump Blues, Delta Blues, Piedmont Blues, Chicago Blues, Memphis Blues, Urban/Electric Blues, Zydeco and many more sub-genres that all relate to blues styling.