95 



a year later, under the description "apophyllite globuliforme", 

 with mesolite and apophyllite, "Waygat, île de Disco, Groen- 

 land"; and apophyllite laminaire .... blanc et nacré, globuli- 

 forme radié ; Niarkornak, Groenland". 



In the year 1851 the mineral species gyrolite was named 

 and described by Anderson^); the locality was Storr in the 

 island of S Rye, one of the Hebrides. 



The occurrence of gyrolite in Greenland was for the first 

 time expressly stated by Greg and Lettsom^), who concerning 

 that mineral write: "specimens of it (arranged in Mr. Allan's 

 collection as mesole by Haidinger) without doubt occur at 

 Karartut, near Godhavn in Disco Island, Greenland ; also at 

 Niakomak, Omensnaksflord, Disco". 



With greater certainty gyrolite was proved to be a Green- 

 land mineral by Heddle (see above) and by J. Ccrrie^) who 

 points out some localities in Greenland, where Giesecke may 

 have found the mineral. Of these Niakornat has been named 

 above; from Taraj ungitsok Giesecke^) mentions: "kugelichten 

 Glimmerzeolith in feinen, fast zerreibiichen Blättern", and by 

 this description gyrolite without doubt must be meant, so much 

 the more as this mineral in reality has been collected by Giesecke 

 at this place (see later on). From Tu pau sar su it (= Tua- 

 pagsuit) Giesecke') mentions "der mehrmals berührte glim- 

 merige Zeolith — blätterig und in Kuben"; here il is also al- 

 most quite certain that he has meant gyrolite. Finally Cdrrie 

 names the locality of Akiarut from which Giesecke'') mentions 

 "massive apophyllite" and "pearl white radiated mesole"; of 

 these the former, in my opinion, may be apophyllite, the latter 

 thomsonite. 



») Phil. mag. I, p. Itl. 



-) Manual of the Mineralogy of Great Britain and Ireland. 1858, p. 217. 

 ») Min. Mag. 14, 190Ô, p. 9.^. 

 *) 1. с p. 329. 

 °) 1. с p. 254. 



'^) A descriptive Catalogue of a new Collection of Minerals in the Museum 

 of the Royal Dublin Society. Dublin, 1832, pp. 54, 55. 



7* 



