University of Northern Iowa

Silicates (Cyclosilicates)

Displaying 51 - 87 of 87
Catalog # Name Description
51 1986.16.54.0014 Tourmaline group None
52 1986.16.54.0015 Tourmaline group None
53 1986.16.54.0016 Tourmaline group None
54 1986.16.54.0017 Tourmaline group None
55 1986.16.54.0018 Tourmaline group None
56 1986.16.54.0019 Tourmaline group None
57 1986.16.54.0020 Tourmaline group None
58 1986.16.54.0021 Tourmaline group None
59 1986.16.54.0022 Tourmaline group None
60 1986.16.54.0023 Tourmaline group None
61 1986.16.54.0024 Tourmaline group None
62 1986.16.54.0025 Tourmaline group None
63 1986.16.54.0026 Tourmaline group None
64 1986.16.54.0027 Tourmaline group None
65 1986.16.54.0028 Tourmaline group None
66 1986.16.54.0029 Tourmaline group None
67 1990.53.0032 Beryl None
68 1990.53.0101 Dioptase None
69 1990.53.0144 Dioptase Scattered tufts on galena crystals. Color: GR
70 1990.53.0150 Beryl None
71 1990.53.0163 Tourmaline group None
72 1990.53.0164 Tourmaline group None
73 1990.53.0165 Tourmaline group None
74 1990.53.0172 Tourmaline group None
75 1990.53.0173 Tourmaline group None
76 1990.53.0214 Tourmaline group None
77 1990.53.0252 Tourmaline group None
78 1990.53.0254 Tourmaline group None
79 1990.53.0279 Beryl None
80 1990.53.0285 Benitoite Color: WH, GY Benitoite image
81 1990.53.0339 Tourmaline group Color: BK
82 1990.53.0352 Tourmaline group Five specimens, a. - e.
83 1990.53.0353 Tourmaline group None
84 1995.36.0013 Benitoite Crystals on & under natrolite. Couple small neptunites (black) at one corner. Color: BL
85 1995.36.0019 Beryl Crystal section. Color: BL
86 1995.36.0029 Tourmaline group Group; elbaite. Var. rubellite, spray of 1" crystals in lavender lepridolite. Color: PK, GY Tourmaline group image
87 1995.36.0037 Tourmaline group Group; schorl. Crystals to 1 1/2" in matrix of spodumene quartz and muscovite. Crystals are zoned center of dark green; outside black. Color: BK,GR