Fisher is an ordinary (L6) chondrite that fell in Minnesota the afternoon of April 9th, 1894.
Fisher is an L6 chondrite; the Meteoritical Society distinguishes L-group chondrites by their relatively low siderophile element content, moderate sized chondrules, and oxygen isotope compositions between those of H and LL group ordinary chondrites. Type 6 meteorites have been metamorphosed under conditions sufficient to homogenize all mineral compositions, convert all low-Ca pyroxene to orthopyroxene, coarsen secondary phases such as feldspar, and obliterate many chondrule outlines, though no melting has occurred. More info, here.
A very brief description of the Fisher meteorite fall appeared in the December 1894 edition of The American Geologist:
“…about four o’clock in the afternoon, a peculiar rumbling sound startled the people in the neighborhood of Fisher, in Polk county, in the Red river valley [sic], in the northwestern part of Minnesota.”
“On that date [that is, April 9, 1894] persons in the neighborhood of here [Fisher] heard a loud explosion followed by a hissing noise as of steam escaping from high pressure, and then a thud as if something had struck the earth very solidly. Of course nothing was known of the cause of the disturbance at this time, but in the summer following a black stone was found which proved to be a meteorite of 9-1/4 pounds weight. This piece was sold to the Minnesota State University, the authorities there claiming it was the first which was ever found in this State. The next summer (1895) two small pieces of the same meteorite were found by me and sold to a firm in New York. This summer (1898) I found another piece when breaking up a new field. This piece weighs slightly less than 3 pounds.”
Fisher was the first meteorite recovered in the state of Minnesota, and is one of 9 approved meteorites from the state.
