168 THE MINERALS OF TASMANIA. 



lation in the " Catalogue of the Minerals of Tasmania," 

 1896. A specimen was exhibited by Messrs. Stitt and Cul- 

 lingsworth at the Tasmanian Exhibition held in Launces- 

 ton in 1891, and named by these gentlemen kammererite, 

 which term has been retained until the present time. 

 This error was doubtless caused through its remarkable 

 similarity to the mineral indicated, both as regards colour 

 and general physical characters, a resemblance so close, in 

 fact, as to be readily excusable, since the supposed identity 

 was made out without a complete analysis. It has been 

 aptly referred to by Mr. R. Sticht in a letter to the writer 

 as " masquerading under the name of a massive form of 

 kammererite." The writer has great pleasure in dedicating 

 this new mineral species to Mr. Robert Sticht, the well 

 known and able general manager of the Mt. Lyell Mining 

 and Railway Company, who has rendered material assist- 

 ance in the production of this Catalogue. At the same 

 time it is necessary to state that its detection as a sub- 

 stance of special interest is due to Mr. A. S. Wesley, the 

 chief chemist to the Mt. Lyell Company, who, by the 

 analysss now published of a portion of a specimen con- 

 tained in his mineral cabinet, and by subsequent research, 

 established its speciiic distinction from any mineral species 

 hitherto described. 



It is related, and may be said to belong, to the genus 

 pyroaurite (R^'" O3, 6Mg O, C O2, A3 H^ O), 

 the greater portion of the Fe 3 O3 being replaced by Cr2 

 O3, or otherwise a carbonato-hydrate of Mg, Cr, and Fe, 

 developed from the alteration of the numberless minute 

 chromite crystals and particles in the presence of serpent- 

 ine. 



An analysis gave the following result : — 



Per cent. 



99-8 



(R. Sticht.) 



AnswerinfT to the formula (Cr Fca) O3, 6Mg O, Co^ 13 

 H.^ O, in which Crg O3 : Fe2 O3 = approximately 3:2. 

 Hardness = 1*5. Specific gravity (determined by Mr. L. 

 K. Ward) = 2-20; that of a' second and almost pure example 



