Journal of Applied Microscopy. 419 



In a fine-grained mass of willemite, 



Hardystonite, a new Calcium-Zinc Silicate from , , . , j. , ,. . xt u 



Franklin Furnace, New Jersey. John E. rhodonite, and franklinite at JNorth 



Wolff. Proc. Am. Acad. Arts and Sci., -^-^^^ n^n^ Franklin Furnace, were 



34: 479-481, 1899. ^ , . r 1 • • 1 r 



found grains of a white mineral tor 

 which the formula (Zn Mn) O, 2 (Ca Mg) O, '2 Si O.,, orZn Ca.^ Si ., 0-, has been 

 calculated. Cleavage and optical characters indicate the tetragonal system. 

 G.=:3.895 — 3.397 ; H=3 to 4 ; lustre, glassy ; color, white to translucent. Fuses 

 with difficulty to a cloudy glass, gives an intense red flame. On coal glows 

 and yields a heavy zinc coat. Optically negative ; cleavage, evidently basal ; 

 shows the axial cross and two sets of rectangular cleavages evidently parallel to 

 the first and second order prisms. Apparently an intermediate silicate near 

 ganomalite. a. j. m. 



Kalgoorlite. E. F. Pittman. Records Gaol. Hg AU2 Ag,, FCg. Massive, with sub- 

 Survey, N. S. Wales, 5. conchoidal 'fracture and iron-black 

 color. G. =8.791. Occurs at the telluride deposits of Kalgoorlie, West 

 Australia, associated with a yellow telluride of gold referred to calaverite. 



L. McI. L. 



Small, brilliant, pale yellowish-bronze 



Tin-white on common basal cleavage. 

 Orthorhombic, with prismatic faces deeply striated, crystals resembling some 

 forms of arsenopyrite. Crystallographic determination by Penfield ; H.=2.5. 

 Composition Au Te,, with 0.4G per cent. Ag. First occurrence noted outside of 

 original locality. Author regards it as probable that calaverite will be found to 

 be simply a silver free form of sylvanite. l. mci. l. 



. , ^ , ,. . , Found very sparingly in scales, nug- 



Native Lead, with Roeblmgite, Copper, etc., at , ,-, xt a 1 



Frankhn Furnace, New Jersey. Warren gets, and films. No crystals. Analogy 

 M. Foote. Am. Jour. Sci., 4,6: 187, presented to occurrence at Langban, 

 1898. ^ 



Sweden. l. Mci. l. 



Melanotekite of Hillsboro, New Mexico ; also Author makes axial ratio, a : b \ c : = 

 note on composition of Kentrolite. C. H. 0.6338: 1: 0.9126, and composition 

 Warren. Am. Jour. Sci., 4, 6: 1 16, 1898. , ^ ,. / • ,, s r 



(Fe^ Og) Pb.. (Si 04)3, conforming to a 



common type of basic silicate formula. Forms of crystals also recorded. 



L. Mci. L. 



Miersite. Nature, April 14, i< 



Name given by L. J. Spencer to a new 

 form of silver iodide (isometric), found 

 at Broken Hill, New South Wales. Occurs in cubes showing tetrahedral faces, 

 and with dodecahedral cleavage. Pale or bright yellow color, with adamantine 

 lustre. L. Mci. L. 



Rhodolite, On the Associated Minerals of. Authors give detailed notes on quartz, 

 W. E. Hidden and J. H. Pratt. Am. Jour. quartz pseudomorphs, corundum, spinel 

 Sci., 4, 6: 463, 1898. ^ ^, . . ,. ^ ,. 



group, bronzite, lolite, staurolite, mon- 



azite and zircon, cyrtolite, gold and sperrylite, -found in the gravel beds of 

 Mason Branch river, Macon county, N. C. l. McI. l. 



