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Back Issues: March/April 1994


Rocks & Minerals
(69:02)
March/April 1994


FEATURES

90  Ice as a Mineral


104 
Secondary Lead-Copper-Zinc Minerals from the Titusville Mine, San Juan County, Colorado


108 
Collecting Mineralogical Bookplates


112 
Connoisseur's Choice: Vivianite, Morococala Area, Oruro, Bolivia


115  Twentieth Rochester Mineralogical Symposium: Contributed Papers in Specimen Mineralogy

120 
Canada's Dinosaur Stamps an their Artist


122 
Rock Chips: What Makes Niagara Falls?


137 
1993 Thank Yous

DEPARTMENTS

85 
Chips from the Quarry

86 
Letters

87 
Geo-Currents


128 
Museum Notes & Announcements

132 
Media Reviews


138 
Coming Events

141 
Classifieds


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