This is an extremely robust, 3-dimensional, fat twin of the type collected in the early to mid-1900s at this important locale. The piece is one of the larger fine examples we have seen by far, and masses at 118 grams. Although the mineral present is rutile, it has replaced (pseudomorphed after) an exceptionally sharp and large brookite crystal. Unusually, sixling twinning is not present and this is a (more rare in this size) untwinned crystal for the locale.. Joe Budd photos