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or on small specimens amongst the loose gravel. As the place 

 is of but hmited extent, it was soon completely searched. The 

 loose material was removed, and digging in the firm ground 

 was undertaken, but no more neptunite was found. The quan- 

 tity collected by me was smaller than that in the Lützen col- 

 lection and it was also poorer in quality. One is justified in 

 assuming that the neptunite in this place originally occurred in 

 a druse formation of limited extent, which has been laid bare 

 through the weathering of the rock. For Mr. Lützen, the director 

 of the colony, the Esquimaux had collected here anything of 

 striking appearance. What I found afterwards, consisted of such 

 pieces as the first collectors had not observed or had not 

 thought worth the trouble of picking up. 



The neptunite crystals of this type usually occur implanted 

 on larger individuals of aegirine , microcline, or quartz, which 

 minerals consequently are earlier than the neptunite. The quartz 

 is always strongly corroded, and the decomposition process to 

 which it has been subject has taken place before the neptunite 

 had crystallized out. Small microcline crystals are later 

 than the neptunite. The neptunite crystals are often grown 

 together into groups occasionally reaching the size of a clenched 

 fist. In the interspaces between the neptunite individuals several 

 minerals occur, which are partly later than the neptunite, and 

 partly formed simultaneously with it. Such minerals are elpidite, 

 epididymite , parisite , polylithionite , calcite etc. Of these, 

 elpidite and epididymite often are in part imbedded in the nep- 

 tunite crystals, whereas the others always are implanted upon 

 their surfaces. 



Type 11. 



G. Nordenskiöld observed in the Lützen collection small 

 neptunite crystals differing considerably in habit from those de- 

 scribed by me. They were prismatically elongated parallel to 

 the vertical axis and bounded bv the following forms: 



