University of Northern Iowa

Petrology

The study of the origin, chemistry, distribution, and structure of rocks.

Displaying 201 - 300 of 1437
Cat. # Name Description
201 00.3.6.210.0003 Copper None
202 00.3.11.242.0012 Gneiss Orbicular granite.
203 00.3.4.7.0009 Silver None
204 00.3.9.80.0001 Basalt Basalt porphyry.
205 1970.47.1.0421 Zinc and copper ore None
206 00.3.10.152.0003 Geode, calcite None
207 00.3.13.513.0008 Guano None
208 1990.20.0014 Coral Pink. Sphere.
209 00.3.4.10.0004 Copper, native None
210 00.3.6.222.0012 Coal Wood approaching lignite.
211 00.3.15.341.0006 Dust Volcanic.
212 00.3.11.248.0004 Lava None
213 00.3.11.258.0002 Leucite None
214 00.3.23.715.0001 Rock None
215 00.3.15.315.0007 Conglomerate Ferruginous. Ribbon or Webber Canon.
216 1970.47.4.0021 Whetstone Very fine.
217 00.3.10.183.0007 Marble None
218 00.3.15.292.0006 Trap None
219 1991.38.1.0004 Oil shale Color: GY
220 00.3.4.42.0002 Galenite None
221 1970.47.1.0030 Rock Unlabelled.
222 1973.0032 Porphyry, dacite Dactite porphyry.
223 00.3.11.272.0003 Limestone Crystalline (Marble).
224 1987.3.0033 Agate None
225 00.3.3.672.0002 Soapstone Steatire soap stone.
226 00.3.11.242.0013 Gneiss Orbicular granite.
227 00.3.15.303.0004 Sandstone None
228 00.3.9.80.0002 Breccia None
229 00.3.23.704.0002 Gilsonite None
230 00.3.5.119.0002 Pebbles Weathered. Quartz.
231 1970.47.1.0422 Zinc and copper ore None
232 00.3.10.153.0001 Geode, calcite None
233 00.3.13.513.0011 Shale None
234 1990.20.0015 Quartz Sphere.
235 00.3.4.13.0013 Lead None
236 00.3.4.2.0001 Gold None
237 00.3.6.231.0002 Coquina None
238 00.3.11.248.0009 Pumice Charcoal gray, frothy. Color: GY
239 00.3.11.258.0003 Breccia Andesite.
240 00.3.23.716.0005 Wollastonite None
241 00.3.15.316.0004 unk None
242 1970.47.4.0031 unk Catalog called this petrified penut candy.
243 00.3.10.185.0004 Marble Polished marble with so-called "Gold Streak" lunonite.
244 00.3.15.293.0001 Concretion Clay-ironstone.
245 1991.38.1.0005 Rock Color: BL
246 1970.47.1.0033 Rock Unlabelled.
247 1973.0073 Obsidian Perlite. Apache tear embedded in perlite. Smoky gray with glassy effect in some places. Color: GY
248 00.3.11.272.0004 Limestone Encrinal limestone.
249 1987.3.0035 Porphyry Sliced; one side polished.
250 00.3.3.672.0003 Soapstone None
251 00.3.6.210.0006 Copper None
252 00.3.15.331.0004 Granite None
253 00.3.11.243.0003 Granitoid Weathered.
254 00.3.15.303.0006 Sandstone Fine-grained.
255 00.3.4.8.0007 Wire, silver ore None
256 00.3.23.705.0010 Rock None
257 1970.47.1.0423 Zinc and copper ore None
258 00.3.10.153.0002 Geode, calcite None
259 00.3.13.513.0014 unk None
260 1990.20.0016 Jasper Sphere.
261 00.3.6.231.0007 Coquina None
262 00.3.11.248.0014 Granite None
263 00.3.11.258.0004 Epidosite None
264 00.3.23.716.0014 Quartzite None
265 00.3.15.317.0002 Sandstone Sand-lime. Brick manufactured at Waterloo, Iowa. Steam-heated.
266 1970.47.4.0047 Oolite Silicified.
267 00.3.10.185.0006 Marble Polished.
268 00.3.15.293.0002 Concretion Clay concretion with calcitic veins within a marcasite band.
269 1991.38.1.0006 Lime Lime - silicate. Color: WH
270 00.3.4.47.0002 Pyrite, galenite ore None
271 00.3.15.696.0001 Dolomite None
272 1970.47.1.0035 Rock Unlabelled.
273 00.3.11.272.0005 Limestone, w/Hornblende ? In limestone.
274 1987.3.0037 Calcite Calcite crystals on fluorite.
275 00.3.6.211.0001 Ore Copper, silver.
276 00.3.15.331.0010 unk Catalog called this Fayalite.
277 00.3.11.243.0006 Granite Coarse-grained.
278 00.3.15.304.0002 Clay Concretion with calcite veins within a marcasite pand..
279 00.3.4.8.0008 Silver Silver carbonate.
280 00.3.9.84.0001 Flint None
281 00.3.23.705.0017 Lava With olivine crystals.
282 1970.47.1.0425 unk None
283 00.3.10.153.0003 Geode, calcite None
284 00.3.13.513.0015 unk None
285 1990.20.0017 Granite Pink. Sphere.
286 1990.53.0093 Uranium Ore.
287 00.3.4.2.0005 Ore, gold Quartz bearing gold.
288 00.3.11.249.0001 Trap None
289 00.3.11.258.0006 Greizen None
290 00.3.23.716.0016 Quartzite None
291 00.3.6.195.0007 Chlorite Rapidolite.
292 00.3.15.317.0003 Cement Cement rock before burning.
293 1970.47.4.2.0001 Limestone "Charles City Marble". Cut and polished.
294 00.3.10.185.0007 Marble None
295 00.3.15.293.0006 Concretion None
296 1991.38.1.0007 Bentonite Color: WH
297 00.3.4.47.0003 Ore None
298 00.3.15.696.0004 Sandstone Rippled.
299 1970.47.1.0041 unk Catalog called this meershaum.
300 1987.3.0045 Chalcedony Chalcedony and asbestos.
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