W. T. Reepper on some Minerals from New Jersey. 37 
The samples No. land 2 were fresh pieces of cleavage crystals 
carefully examined by the lens so as to avoid all visible admix 
tures. No. 1 was lighter in color than No. 2, a and 8, which 
latter are analyses of the same powder. No. 8. are analyses of 
two different powders of the massive variety. 
1 2. 3. Oxygen 
a b a b i 2, a. | 2.6) [Sp Geese 
Si_-.| 30-76} 29-90} 30-56] 30‘67| 30-42} 16-41 15-95 | 16°30} 16°36] 16-22 
Fe ..; 33°78] 35°60) 35-44| 35°37] 34-20 7°51) 7-91] 7:88) 786} 7-60 
Mn-.-| 16°25] 16°90} 16°93] 17-81} 17°67} 3°66) 3°81| 3-82) 401) 3°98 
Zn --| 10°96] 10°66} 10°70} 9°87] 9:09) 2°16) 2-11) 2-11| 1°95) 1:80 
Mg--| 7°60; 5°81} 5-44) 5-69) 649} 3°04; 2°32) 2°18) 2-28) 2-60 
Insol. 103} 1:04; 1:39) 2°65 
99°35} 99-90| 100-11| 100-80! 100-52| 16°37! 1615! 15:99! 16-10] 15-98 
The foregoing oxygen ratios make the mineral a pee: 
The crystallization being orthorhombic with the parametn 
ratios of the chrysolite group, which is confirmed by the Ae 
physical and chemical characters ; it is hence an iron-manganese- 
zine chrysolite, the first, to the best of my knowledge, of the 
arn sau to the composition of which zinc enters as a constituent. 
occurs, as before said, on Stirling hill, accompanied by 
Willonite Franklinite, J: effersonite and spin nel. 
* ee Oe ' 
Mn6 MgG Insol. 
50-40 4354 76 569 0°08 = 10047 
Specific gravity =3-052. Hardness =4. 
The mineral differs from the known dialogites by its greater 
proportion of carbonate of lime, and may be considered chged 
as a dialogite in which a little more than one-half of the Mn is 
replaced by lime, or as dolomite in which about five-sixths of 
the magnesia is replaced 
3. A pseudomorph of £08 after a micaceous mineral probably 
me chlorite. ; 
On Scotch mountain, Wathen county, N. J., not far from New 
Village, among the Laurentian syenitic eneiss formation of that 
region, there occur, scattered over the ground, numerous masses 
of a white quartzose mineral apparently of agglutinated rounded 
granules of about 4 inch diameter. Upon close examination, 
