CALCITES OF NEW YORK 97 
SUMMARY OF MEASURED AND CALCULATED ANGLES 
NO. OF 
LETTER ANGLE MEASURED | CALCULATED 
READINGS 
° / fo} / 
O20: 0001 : 0332 4 56 1 59 57 
0.” = 0, 3302 ; 0332 2 87 Be 18 
0:9. 0001 : 0221 4 62 564 | 63 7 
aea®: 1120 : 0221 y, 39 4 39 264 
ees Ke. ROO Ie il 74 40 74 55 
De D 1011 : 1010 3 45 36 45 234 
NINE 5382 : 5832 i! 12 59 12 544 
ING oN: 5882 : 8352 2 41 20 Tal 46 
N: 2a 5382 : 1120 4 18 48 18 + 
M2 SW: 8) MO 88 Bo NOssa33 1 20 50 20 40 
0: :a Qe SelOnSel2 0) 2 26 2 26 15 
CROWN POINT, ESSEX CO. 
Plate 14, figure 5 
Large rhombohedral crystals of calcite were obtained from the locality 
formerly worked for eupyrchroite which is situated ~ of a mile southeast 
of Crown Point. These crystals are bounded by the unmodified planes of 
the fundamental rhombohedron p. (1011) twinned parallel to the basal plane. 
They average 12 centimeters in diameter, the surfaces being dull and for the 
most part covered with a thin stalactitic deposit of calcite, specially on the 
edges. They resemble the crystals from Sterlingbush in their strong twinning 
tendency and are furthermore, in many instances, covered with low pro- 
jecting planes of p. twinned parallel to the negative rhombohedron 6. (0112). 
SMITH’S BASIN, WASHINGTON CO. 
Plates 15, 16 
These calcite crystals were collected from the quarries of the Keenan 
Lime Co. situated about 4 mile east of Smith’s Basin. The calcite occurs 
in veins traversing the Trenton limestone in the southern quarry which lat- 
” 
ter shows numerous “slickenslides’’ and other evidences of faulting. The 
material available for study consists of a suite of 18 specimens from which a 
series of 31 crystals illustrating the three types was selected. 
hype Tip 15) te, I) The crystals: of this type are extremely 
