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Mont Saint-Hilaire Unknowns

     Mont Saint-Hilaire has been and continues to be an excellent provider of new mineral species to science since it was brought to the attention of mineralogists in 1963 by Frank Melanson. As many problematical species were recovered it was necessary to assign code names to the unknowns.

     The present list includes the code names up to UK #113, 42 of which are still unidentified (several UK's in description process). The following table will link to a brief description of their properties, rock environments, associated minerals and fluorescence to help in their recognition. A (p) indicates a photo is available for that UK, expect many more soon. At this time only UK-33, -52, -53, -60, -86, -107 and -113 have photos. The unknowns will also be categorized in three categories: (only UK -75, -92, -99, -105, -107 and -108 for now)

     Some notes on the progress of some of the unknowns have been added to the following UKs: -75, -99, -107, and -108. Those are updates from Dr Andy McDonald of Laurentian University.

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



List of all Mont Saint-Hilaire Unknowns (type locales in bold blue)

UK# 1
UK# 2
UK# 3
UK# 4
UK# 5

UK# 6
UK# 7
UK# 8
UK# 9
UK# 10

UK# 11
UK# 12
UK# 13
UK# 14
UK# 15

UK# 16
UK# 17
UK# 18
UK# 19
UK# 20

UK# 21
UK# 22
UK# 23
UK# 24
UK# 25

UK# 26
UK# 27
UK# 28
UK# 29
UK# 30

Lorenzenite
Narsarsukite
Ancylite-(Ce)
Steacyite
Labuntsovite

Monteregianite-(Y)
Lorenzenite
Leucosphenite
Mixture of pyrophanite and rutile
Ancylite-(Ce)

Apophyllite group
Cordylite-(Ce)
Lemoynite
Epididymite
Carletonite

Lorenzenite
Perraultite
Tundrite-(Ce)
Nenadkevichite
Hilairite

Vesuvianite
Britholite-(Ce)
Gaidonnayite
Mixture of götzenite and another phase
Yofortierite

Mixture of parisite and albite
Thornasite
Vinogradovite
Nontronite
Mckelvite-(Y)
UK# 31
UK #32
UK# 33
UK# 33A
UK# 34
UK# 35

Yofortierite
Micheelsenite
Donnayite-(Y)
(REE analogue of donnayite-(Y)) (p)
Rhabdophane group
Mixture of chabazite and another phase
UK# 36
UK# 37
UK# 37A
UK# 38
UK# 39
UK# 40

Miserite
Ewaldite
(Sr analogue of ewaldite)
Zakharovite
Tadzhikite-(Ce)
Carbocernaite
UK# 41
UK# 42
UK# 43
UK# 44
UK# 45

Penkvilskite
Petarasite
Franconite
Daqingshanite-(Ce)
Doyleite

UK# 46
UK# 47
UK# 48
UK# 48A
UK# 49
UK# 50
UK# 50A

Epistolite (previously murmanite)
Mixture of chabazite and natrolite
Hingganite-(Y)
Hingganite-(Ce)
Mixture of terskite and zakharovite
Hochelagaite
Like hochelagaite with a slightly different X-ray pattern
UK# 51
UK# 52
UK# 52A
UK# 53
UK# 53A
UK# 53B
UK# 54
UK# 55

(Al hydroxide)
(Hydrous K, Na, Mn, Fe silicate) (p)
(Hydrous K, Na, Mn, Fe silicate)
(Na B silicate) (p)
Malinkoite
(NaB silicate)
Griceite
(Copper sulfide)
UK# 56
UK# 57
UK# 58
UK# 59
UK# 60(1)
UK# 60(2)
UK# 60A

(Hydrous Ca Nb oxide)
Lalondeite
Charmarite
Normandite
(Hydrous carbonate of Sr, Ba, Ca and REE, where Sr > Ba)
(Hydrous carbonate of Sr, Ba, Ca and REE, where Sr > Ba)
(Hydrous carbonate of Sr, Ba, Ca and REE, where Ba > Sr)
UK# 61
UK# 61A
UK# 62
UK# 63
UK# 64
UK# 65

Haineaultite
Haineaultite
Rouvilleite
Nalipoite
Phosinaite-(Ce)
Kukharenkoite-(Ce)
UK# 66 UK# 67
UK# 68(1)
UK# 68(2)
UK# 68A
UK# 69
UK# 70

Makatite
(Zr, Na, K, Mn, Ca and Fe silicate)
(Na, Mn, Nb oxide or hydroxide)
(Na, Mn, Nb oxide or hydroxide)
(Na, Mn, Nb oxide or hydroxide)
Bobtraillite
(Ca, K, Mn, Nb, Al silicate)
UK# 71
UK# 72
UK# 73
UK# 74
UK# 75

Mixture of astrophyllite and natrolite
(Ca silicate, with minor Al, Fe)
(Hydrous Na carbonates (3 members))
Lintisite
(Ti analogue of lemoynite)
UK# 76
UK# 77
UK# 78
UK# 79
UK# 80

Shigaite
(Hydrous Na, Ca silicate)
(Na, Mn silicate)
(Na, Fe, Mn silicate)
(Na, Fe, Mn silicate)
UK# 81
UK# 82
UK# 82A
UK# 83
UK# 84
UK# 85

Silinaite
(Hydrous Cu Fe sulfide)
(Hydrous Cu Fe sulfide)
(Ca, Na, Mn, Ti and Th silicate)
Gaultite
Abenakiite-(Ce)
UK# 86
UK# 87
UK# 88
UK# 89
UK# 90(1)
UK# 90(2)

(?, soon) (p)
(Pb)
Sazykinaite-(Y)
(Hydrous Na carbonate)
Sheldrickite
Sheldrickite
UK# 91(1)
UK# 91(2)
UK# 92
UK# 93
UK# 94
UK# 95

(Na, Al & REE carbonate)
(Na, Al & REE carbonate)
Martinite
Thomasclarkite-(Y)
(Na, Fe silicate)
(Na, Mn, Ca, REE anhydrous phosphate)
UK# 96(1)
UK# 96(2)
UK# 97
UK# 98
UK# 99
UK# 100
UK# 100A

Adamsite-(Y)
Adamsite-(Y)
Adamsite-(Y)
(Na carbonate)
(Sr, Na, Zr silicate)
Petersenite-(Ce)
Calcioburbankite
UK# 101
UK# 102
UK# 103
UK# 104
UK# 105

(Na, K, Ti silicate)
Reederite-(Y)
Lukechangite-(Ce)
Horváthite-(Y)
(Y phosphate)
UK# 106
UK# 107
UK# 108
UK# 109
UK# 110

Adamsite-(Y)
(Hydrous Na, Ca, Zr, Y phosphate carbonate) (p)
(Hydrous Na, Ca, Y phosphate carbonate)
IMA 2005-12a
Tumchaite
UK# 111
UK #112
UK #113
(Na, Ca, Ba, Mn phosphate)
Manganokukisvumite
(Na, Ca carbonate) (p)