COPPER    DEPOSITS    OF    HARTVILLE    UPLIFT,    WYOMING.  107 
arallel  to  ,the  schistosity  in  which  malachite,  green  and  brown  chry- 
ocolla,  azurite,  chalcocite,  and  chalcopyrite  occur  in  cavities  formed 
y  the  fracturing  of  the  country  rock.  The  ore  carries  from  3  to  30 
ier  cent  of  copper,  masses  of  chalcocite  weighing  47  pounds  having 
een  found.  Malachite,  chrysocolla,  and  chalcocite  occur  in  lime- 
tone  on  the  Omaha,  Emma,  Lucky  Henry,  and  Metz  claims.  These 
eposits  are  probably  similar  to  those  described  under  the  heading 
Lenses  in  pre-Caobrian  limestone"  (pp.  98-99). 
