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Mont Saint-Hilaire Unknowns - 30's

signifies that this unknown is on the fast-track toward description. means that this UK will need some help if it wants to go forward. indicates that this unknown is at a dead end for the time being.


The Unidentified
UK# 33A UK# 37A UK# 51 UK# 52 UK# 52A UK# 53
UK# 53B UK# 55 UK# 56 UK# 60(1) UK# 60(2) UK# 60A
UK# 67 UK# 68(1) UK# 68(2) UK# 68A UK# 70 UK# 72
UK# 73 UK# 75 UK# 77 UK# 78 UK# 79 UK# 80
UK# 82 UK# 82A UK# 83 UK# 86 UK# 87 UK# 89
UK# 91(1) UK# 91(2) UK# 94 UK# 95 UK# 98 UK# 99
UK# 101 UK# 105 UK# 107 UK# 108 UK# 111 UK# 113



UK# 33A - (REE analogue of donnayite-(Y))
UK-33a Crystal
UK# 33a crystal
© Peter Richards
Properties - not distinguishable from donnayite-(Y)
Occurrence - silicate and carbonate cavities, altered pegmatites
Associated minerals - aegirine, albite, ancylite-(Ce), catapleiite, ewaldite, fluorite, microcline, monteregianite-(Y), rhodochrosite, siderite, sphalerite and weloganite. (Top)
UK# 37A - (Sr analogue of ewaldite)
Properties - white, gray, greenish gray, brown barrel shaped and pagoda shaped crystals; not distinguishable from donnayite-(Y), ewaldite and mckelveyite-(Y)
Occurrence - silicate and carbonate cavities, igneous breccia and pegmatites
Associated minerals - donnayite-(Y), mckelveyite-(Y) and ewaldite (Top)