57 



axes (and, of course, also the c-axes) hold a radiating position 

 with reference to one another in the plane of the second pina- 

 coid. The extreme tables of the group thus form an angle of a little 

 more than 20° with each other. The crystal tables are very thin, 

 but tolerably rich in faces. On account of the intergrowth they 

 are not suitable for measurements of the angles. The extreme 

 ones are rounded by the wearing of the gravel. Between the 

 divergent tables there are light needles of elpidite and small 

 single parisite crystals. These two minerals are consequently 

 younger here than the eudidymite. The second of the eudi- 

 dymite specimens found at the place has nearly the same size 

 as the one described above, but the intergrowth is here more 

 irregular and the single tables less perfectly developed. Between 

 the tables occurs elpidite, abundance of small quartz crystals, 

 and small rounded crystals of ancylite. The third specimen 

 is 15"™ in length, 11"'" in breadth and 2""" in thickness. This 

 specimen also consists of a number of thin tables grown to- 

 gether in somewhat divergent position with the ô-axes parallel. 

 On this crystal group occur individuals of epididymite, of which 

 a description will be given in the following pages. 



In order to do as httle injury as possible to the valuable 

 crystal groups, only a few very small tables were detached, on 

 which the necessary angular measurements were made. The 

 following forms were found to be present, viz. 



2={50l}, ô = {010}, e = {0. 10. 3}, >=^{053}, c = {00l}, 

 ^={551}, V = {ZU], s = {552}, M = {335}, / = {310}, *z = 

 {1 5. 5. 3}, *k = [n. 5. 3}, Ч = {625]. 



The forms marked by an asterisk (*) are new for the 

 mineral. 



Like the well-known Norwegian eudidymite crystals these 

 crystals are also tabular parallel to the third pinacoid. Being 

 bounded by faces belonging to the zones [ill, OOl] and 

 [111,001] they likewise have a rhombic outline with angles 



