Allegan’s a historic American fall from 1899. It’s a fairly typical H-chondrite, with moderate porosity and well-defined chondrules.
From Merrill and Stokes’ 1900 report:
Source: A new stony meteorite from Allegan, Michigan, and a new iron meteorite from Mart, Texas, by G.P. Merrill and H. N. Stokes.
These are two such fragments from the main mass, purchased from the collection of a deceased geologist in Michigan. They came with original prints of the above paper and an original copy of Wirt Tassin’s 1909 paper on oldhamite in Allegan.
51.846 gram fusion-crusted fragment