Hydroxides

Displaying 151 - 200 of 223
Catalog # Name Description
151 1970.74.0013M Franklinite Granules in calcite. Color: BK
152 1970.74.0137M Hematite Pyrite "needles"; 1 TN, rest are 1970.74.0137M (Hematite) image
153 1970.74.0141M Franklinite One-quarter" blebs of franklinite and fewer of willemite in calcite. Color: BK
154 1970.74.0175M Hematite Iowa Geological survey, Iowa City, IA tag sample #9. Color: BR,BK
155 1970.74.0222M Hematite Ore.
156 1970.74.0313M Limonite None
157 1970.74.0398M Hematite None
158 1970.74.0536M Limonite Crystals
159 1970.74.0571M Franklinite Granules in calcite; a few granules of pale green willemite. Color: BK
160 1970.74.0617M Limonite None
161 1970.74.0772M Hematite Color: RD-BR
162 1970.74.0773M Hematite Massive, shaly. Color: BR
163 1970.74.0810M Hematite None
164 1970.74.0840M Romanechite Calcite fluoresces green and orange. Color: BK
165 1970.74.0852M Limonite Cube.
166 1970.74.0883M Romanechite Earthy mass. Color: BK
167 1970.74.0914M Goethite Stalactitic, radiating balls. Color: BK
168 1970.74.0916M Romanechite Brown-coated concretion. Color: BK
169 1970.74.0919M Romanechite Brown-coated, stalactitic. Color: BK
170 1970.74.0920M Pyrolusite None
171 1970.74.0925M Goethite Botryoidal. Color: BK
172 1970.74.0946M Hematite Lightweight mass. Color: GY
173 1970.74.0994M Romanechite Botryoidal. Color: BK
174 1970.74.1006M Limonite Iridescent.
175 1970.74.1016M Brookite Loose crystals, 1/4" - 3/8". Color: BK
176 1970.74.1043M Magnetite Mostly massive with chalcopyrite crystals to 1/4" in calcite. Color: BK
177 1970.74.1061M Franklinite Massive calcite with band of 1/8"-1/4" franklinites (fl). Color: BK
178 1970.74.1121M Limonite Pseudomorphs after pyrite. Color: BR
179 1970.74.1151M Columbite (Tantalite group) Complex, solid solution series. Columbite usually refers to ferrocolumbite FeNb2O6. Color: BK
180 1970.74.1246M Ilmenite Small crystal pieces. Color: BK
181 1970.74.1250M Pyrolusite Massive. Color: BK
182 1970.74.1286M Hematite Small cluster of crystals. Color: BK
183 1970.74.1304M Chromite Dark bands of chrome.
184 1970.74.1352M Ilmenite Massive, with magnetite. Color: BK
185 1970.74.1431M Franklinite Scattered granules and masses in calcite, 1/8" - 1/4", also some willemite grains to 1/4". Color: BK
186 1970.74.1434M Magnetite One-quarter" crystal in chlorite schist. Color: BK
187 1970.74.1530M Hematite Thin, shiny layer on matrix. Color: BK
188 1970.74.1560M Limonite Vial.
189 1970.74.1593M Magnetite Grains disseminated in matrix. Color: BK
190 1970.74.1595M Franklinite Massive. Color: BK
191 1970.74.1635M Hematite None
192 1970.74.1656M Hematite Specular or micaceous. Color: GY
193 1970.74.1660M Hematite Iron.
194 1970.74.1672M Corundum var. Ruby Vial of small (1/8") rubies. Color: RD
195 1987.3.0050 Franklinite Typical mixture of black franklinite & brown willemite grains in calcite, and franklinite in calcite. Color: BK
196 1990.5.3.0343 Goethite Botryoidal. Color: BK
197 1990.53.0025 Spinel Group of 10 3/8" crystals on dolomite(?). Color: BK
198 1990.53.0027 Limonite Limonite after pyrite; 2 crystals are cracked.
199 1990.53.0069 Goethite Shiny, column. Color: BKBR
200 1990.53.0095 Hematite Drusy on matrix. Color: BK