Colorado Minerals! Over 200 specimens of assorted minerals from throughout Colorado, ranging from sedimentary deposits to ore bodies to pegmatites. Colorado is one of the mineralogically diverse states in the U.S., and has always been a favorite among collectors around the world.
Argentine Tango -- A Brief History. The exact origins of tangoâboth the dance and the word itselfâare lost in myth and an unrecorded history. The generally accepted theory is that in the mid-1800s, the African slaves who had been brought to Argentina or their descendants began to influence the local culture.
Experts in the history of dance believe that some of the Charleston's movements probably came from Trinidad, Nigeria, and Ghana. Its first appearance in the United States was around 1903 in Black communities in the South. It was then used in the Whitman Sisters stage act in 1911, and in Harlem productions by 1913.