774 The American Naturalist. [August, 
occurring in the Upper Silurian and Lower Devonian beds of the 
Appalachians in Highland Co., Va., consist of porphyritic basalt com- 
posed of phenocrysts of augite and olivine in a ground-mass of plagio- 
clase, augite, magnetite, and a few flakes of biotite. —— Sandberger ? 
mentions cordierite occurring as an inclusion in the basalt of the 
Calvarienberg, near Fulda, in Hessen. He also gives an analysis of 
the phonolite of Heldburg, near Coburg. Holland ? has isolated 
the porphyritic crystals from the basalts of Mull, Eng., and finds them 
to correspond in composition and other properties with anorthite of 
the composition AbAn,. In the phonolite of the Serra de Tingua, 
Brazil, are coarse-grained patches with the structure of foyaite. They 
have the form of leucite crystals, and are, according to Hussak,!! 
nothing more or less than pseudo-crystals of this mineral. They con- 
sist of a thin wall composed of crystals of orthoclase, surrounding a 
coarse-grained aggregate of the constitution of foyaite. The external 
form of the pseudomorphs is so perfect that the angles of leucite can 
readily be detected upon them. C. W. Hall? records the fact 
that the Trenton limestone of St. Paul and Minneapolis., Minn, is 
composed of untwinned rhombohedra of caicite. An argillaceous bed 
lying above the limestone contains many rhombohedra of calcite im- 
 bedded in its matrix. Dr. Lawson 5 describes an amygdaloidal trap 
from the Animikie series of Thunder Bay, Canada, that contains about 
2% of native copper. 
Mineralogical News.—New Minerats.—/nesife.—At the mine 
Hilfe Gottes and Ferdinand, near Nanzenbach in the Dillenburg region, 
Germany, is a new manganese mineral associated with various ores of 
this metal. The new mineral is a dense colorless to dark brown sub- 
stance, whose hardness varies between 5 and 6, and whose streak is 
yellowish-brown. Its fusibility is 3. In other specimens the mineral 
occurs in radial aggregates of a flesh-red color, with a hardness of 6-7, 
a specific gravity of 3.103, a white streak and a glassy lustre. It has 
an extinction of 20° against one of its cleavages, and is regarded by 
Schneider * as triclinic. Its composition is 
SiO, ALO, FeO MnO MgO CaO H,O 
SSO- -A9 .69 38.23 Be. 800 849 
9 Neues Jahrb, f. Min., etc., 1890, I., p. 101. 
12 Bull. Minn. Acad. ves rq 5 oath No. 1., p; 11x. 
13 Amer. Geologist, M » 
14 Zeits d. deutch gel aa XXXIX., 1889, p. 829. 
