32(i Mr'Mbllcr on the Locality of Acmite. 



Art.XXIIL— On the Locality of Acmite. By N. B. Mollek, 

 Esq. of Porsgrund, Norway.* 



Maw years ago, Mr Brataas, one of the captains in the min- 

 ing district of Kongsberg, had discovered this mineral at 

 Eger, and showed it to Professor Strom, who was, at that 

 time, the clergyman of the place, and who, in his description 

 of the parish of Eger, mentioned it under the name of crystal- 

 lized hornstone or shorl.f 



Some time afterwards, a peasant brought some crystals of 

 it to Professor Esmarck, but as he had found them only de- 

 tached, he could give no information in regard to their true 

 locality. Professor Esmarck himself considered these crystals 

 as staurolite, a mineral which in fact they much resemble 

 when found without their terminations, which was the case with 

 those which he possessed. 



Mr P. Strom, a manager of several of the Kongsberg mines, 

 found the mineral in situ, from the instructions given by Cap- 

 tain Brataas, and took several specimens with him to Stock- 

 holm, where it was immediately suspected to be something 

 new ; and this was perfectly confirmed by the subsequent ana- 

 lysis by Mr Strom himself, and by Professor Berzelius, for as- 

 certaining the quality and quantity of the ingredients. 



Since Mr Strom always kept the place a great secret, it is 

 probable that mineralogists would have long remained un- 

 certain in this respect, had I not had the good fortune of 

 becoming acquainted with Mr Brataas, who took me to the 

 real locality, which is Rundemyr, about two English miles 

 distant from Bisseberg Mine, in the parish of Eger, near 

 Kongsberg. It occurs in considerable quantities, imbedded 

 in quartz and felspar ; many of the crystals being upwards of 

 a foot in length. They are, however, not easily disengaged 



* Extracted from the manuscript account with which we have been fa- 

 voured by the author, and which is intended for the •' Magazinfur Na- 

 turvidenskabernp" of Cliristiania.— Ed. 



t Strom. Eger Easier, p. 50. The identity of these crystals with the 

 Acmite, has been placed beyond a doubt, by the comparison of the very- 

 specimens described by Professor Strum, which are at present in the pos- 

 session of Jlr Otto Tank, of Fredrikshald. 



