116 NEW YORK STATE MUSEUM 
of forms in the zone [1102.1011.1120]. In this zone are present the following 
forms) o(Oll2)  x3(4337210)), =p: (LOD RNG(@7295) ewan een (21) en 
polar termination consisting of the planes of 6. and x: is much rounded 
and striated by vicinal planes and the faces of the scalenohedron though 
well defined are dull. The positive rhombohedron m. (4041) and the 
positive scalenohedron 3: are present in small development. 
Type III [fig. 4]. Minute crystals of this type were noted in one 
specimen. They form a thin druse deposited directly upon the surface of 
the limestone. They differ chiefly in habit from the preceding types in 
the dominance of the scalenohedron x: (4.3.7.10) and in the presence of the 
negative rhombohedrons 4. (0445) and 8. (0778), both of which latter forms 
are represented by planes of fine brilliancy. The prominent planes 
of the prism b (1010) are rounded and uneven. The faces of the zone 
[1102 OMT 120i) wlnich heres "consists of rors: oe (ONG) eax Cleon) 
p. 1011) and K:(2181) are considerably striated, particularly in the larger 
of the crystals which measure 2 millimeters in diameter. The general 
aspect of the combination of this type is low scalenohedral. 
SUMMARY OF MEASURED AND CALCULATED ANGLES 
LETTER ANGLE ee ce MEASURED | CALCULATED 
READINGS 
io} / o} 
as 2S. HOLD 2 1350. UB. 1 14a 41 Hill 474 
[Ds 3 aa, Oil = 4041 3 Sl 174 Bll 103 
oa, © 0M, 4041 : 0441 a 65 40 65 50 
Os $70 ONeill iy 70 48s 70 513 
3, 3 ld 0112 : 0110 5 63 24 63 45 
O> 8 0112 : 0445 5 12 4 2 14 
a. 2 W, 0112 : 0778 4 14 463 14 33 
Oe Ree Ou 2 4h 3.7/1 8 16 584 17 2 
xe 3 5x! AB, 70) 97/8. 5.10 3 D5 OO 234 
oO. 3 Gs OI 295 6 16 254 16 36 
Keke: PBL 2 DBRT 3 0D 18 US 2? 
Ike 8 IKs DNAs SABI 3 36 5 35 36 
fam, 9 IK§ 2131 : 4041 4 19 324 19 24 
Sie 2 Sk 6281 : 682 4 91 2 91 3 
Sige Sie 6281 : 8261 2 27 254 Ze 31 
