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.
Before 1800, was a dance that used variation techniques (melodic and/or harmonic variations), although not necessarily ground-bass variation. In 19th and 20th century music, was a set of ground-bass or ostinato variations. Likely originated in Spain during the late 16th and early 17th centuries.arabande. Popular baroque instrumental dance and one of the standard movements in a suite (along with the allemande, courante, and gigue). Originated in the 16th century in Latin America and Spain. Two types emerged-a fast type popular in Italy, England, and Spain, and a slow type popular in France and Germany.