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Lithics Home | Counties A-Z | Geologic Systems | Lithic Types | Chert Drawers | Lithics Program A - G | H - K | L - P | R - S | T - W County County Exp. # Cat. # Drawer # System Lithic Type Heated Exposure Hardin HA-C 445 19 Devonian (Middle) Grand Meadow Hardin HA-C+ 445 19 Devonian (Middle) Grand Meadow + Hardin HA-A3+ 134 17 Mississippian (Lower) Maynes Creek Cream + O Hardin HA-B2+ 132 17 Mississippian (Lower) Maynes Creek Cream + O Hardin HA-A2+ 135 17 Mississippian (Lower) Maynes Creek Green + O Hardin HA-A1 3 16 Mississippian (Lower) Maynes Creek Speckled Hardin HA-A1+ 3 17 Mississippian (Lower) Maynes Creek Speckled + Hardin HA-B3 133 17 Mississippian (Lower) Maynes Creek Speckled O Hardin HA-B3+ 133 17 Mississippian (Lower) Maynes Creek Speckled + O Harrison HR-A 345 9 Pennsylvanian Winterset C Q Harrison HR-A+ 345 9 Pennsylvanian Winterset C + Q Henry HN-G 307 14 Mississippian (Middle) Burlington T Henry HN-G+ 307 14 Mississippian (Middle) Burlington + T Henry HN-I 310 14 Mississippian (Middle) Burlington Henry HN-I+ 310 14 Mississippian (Middle) Burlington (Keokuk?) + T Henry HN-L 462 11 Mississippian (Middle) Croton Banded Henry HN-L+ 462 11 Mississippian (Middle) Croton Banded + Henry HN-6 6 10 Mississippian (Middle) Croton Chalcedonic Henry HN-6+ 6 10 Mississippian (Middle) Croton Chalcedonic + Henry HN-D 175 10 Mississippian (Middle) Croton Chalcedonic O Henry HN-D + 175 10 Mississippian (Middle) Croton Chalcedonic + O Henry HN-H 208 10 Mississippian (Middle) Croton Chalcedonic T Henry HN-H+ 308 10 Mississippian (Middle) Croton Chalcedonic + T Henry HN-I1 312 3 Quaternary Glacial Till T Henry HN-I1+ 312 3 Quaternary Glacial Till + T Henry HN-E 266 12 Mississippian (Middle) Keokuk O Henry HN-E+ 266 12 Mississippian (Middle) Keokuk + O Henry HN-F 306 12 Mississippian (Middle) Keokuk O Henry HN-F+ 306 12 Mississippian (Middle) Keokuk + O Henry HN-M 504 12 Mississippian (Middle) Keokuk Henry HN-M+ 504 12 Mississippian (Middle) Keokuk + Henry HN-I2 309 17 Mississippian (Lower) Maynes Creek Cream T Henry HN-I2+ 309 17 Mississippian (Lower) Maynes Creek Cream + T Henry HN-I3 311 17 Mississippian (Lower) Maynes Creek Cream T Henry HN-I3+ 311 17 Mississippian (Lower) Maynes Creek Cream + T Henry HN-7 7 10 Mississippian (Middle) Verdi Henry HN-7+ 7 10 Mississippian (Middle) Verdi + Henry HN-B 167 10 Mississippian (Middle) Verdi C Henry HN-B+ 167 10 Mississippian (Middle) Verdi + C Henry HN-J 360 10 Mississippian (Middle) Verdi Henry HN-J+ 360 10 Mississippian (Middle) Verdi + Henry HN-L+ 463 10 Mississippian (Middle) Verdi + Henry HN-C 173 12 Mississippian (Middle) Warsaw Tabular S Henry HN-C+ 173 12 Mississippian (Middle) Warsaw Tabular + S Howard HW-A 114 19 Devonian (Middle) Grand Meadow Q Howard HW-A+ 114 19 Devonian (Middle) Grand Meadow + Q Humboldt HB-A 3 Quaternary Glacial Till Humboldt HB-A+ 3 Quaternary Glacial Till + Jackson JK-C 484 22 Silurian (Lower) Blanding Jackson JK-C+ 484 22 Silurian (Lower) Blanding + Jackson JK-D 485 22 Silurian (Lower) Blanding Jackson JK-D+ 485 22 Silurian (Lower) Blanding + Jackson JK-F 487 22 Silurian (Lower) Blanding Jackson JK-F+ 487 22 Silurian (Lower) Blanding + Jackson JK-G 488 23 Silurian (Lower) Blanding Jackson JK-G+ 488 22 Silurian (Lower) Blanding + Jackson JK-H+ 489 23 Silurian (Lower) Blanding + Jackson JK-I 490 23 Silurian (Lower) Blanding Jackson JK-I+ 490 23 Silurian (Lower) Blanding + Jackson JK-B 288 21 Silurian (Lower) Hopkinton R Jackson JK-B+ 288 21 Silurian (Lower) Hopkinton + R Jackson JK-J 491 21 Silurian (Lower) Hopkinton Jackson JK-J+ 491 21 Silurian (Lower) Hopkinton + Jackson JK-E 486 20 Silurian (Lower) Scotch Grove Jackson JK-E+ 486 20 Silurian (Lower) Scotch Grove + Jackson JK-A 180 3 Quaternary Tongue River Silica T Jackson JK-A+ 180 3 Quaternary Tongue River Silica + Jefferson JF-C 172 11 Mississippian (Middle) Croton Banded R Jefferson JF-C+ 172 11 Mississippian (Middle) Croton Banded + R Jefferson JF-D1 199 10 Mississippian (Middle) Croton Chalcedonic Q Jefferson JF-D1+ 199 10 Mississippian (Middle) Croton Chalcedonic + Q Jefferson JF-D2 211 10 Mississippian (Middle) Croton Chalcedonic Q Jefferson JF-D2+ 211 10 Mississippian (Middle) Croton Chalcedonic + Q Jefferson JF-E 201 11 Mississippian (Middle) Croton Chalcedonic Jefferson JF-E+ 201 11 Mississippian (Middle) Croton Chalcedonic + Jefferson JF-F 204 11 Mississippian (Middle) Croton Chalcedonic C Jefferson JF-F+ 204 11 Mississippian (Middle) Croton Chalcedonic + C Jefferson JF-A 195 12 Mississippian (Middle) Warsaw Tabular S Jefferson JF-A+ 195 12 Mississippian (Middle) Warsaw Tabular + S Jefferson JF-E 201 12 Mississippian (Middle) Warsaw Tabular Jefferson JF-E+ 201 12 Mississippian (Middle) Warsaw Tabular + Johnson JH-E 446 19 Devonian (Lower) Kenwood Member Johnson JH-E+ 446 19 Devonian (Lower) Kenwood Member + Johnson JH-A 8 18 Devonian (Middle) Rapid C Johnson JH-A+ 8 18 Devonian (Middle) Rapid + C Johnson JH-B 213 18 Devonian (Middle) Rapid O Johnson JH-B+ 213 18 Devonian (Middle) Rapid + O Johnson JH-C 214 18 Devonian (Middle) Rapid O Johnson JH-C+ 214 18 Devonian (Middle) Rapid + O Johnson JH-F 503 18 Devonian (Middle) Rapid Johnson JH-F+ 503 18 Devonian (Middle) Rapid + Johnson JH-D 444 19 Devonian (Middle) State Quarry Member Johnson JH-D+ 444 19 Devonian (Middle) State Quarry Member + Jones JN-C 443 21 Silurian (Lower) Hopkinton Q Jones JN-C+ 443 21 Silurian (Lower) Hopkinton + Q Jones JN-F 492 21 Silurian (Lower) Hopkinton Jones JN-F+ 492 21 Silurian (Lower) Hopkinton + Jones JN-A 196 20 Silurian (Lower) Scotch Grove Jones JN-A+ 196 20 Silurian (Lower) Scotch Grove + R Jones JN-B 290 20 Silurian (Lower) Scotch Grove R Jones JN-B+ 290 20 Silurian (Lower) Scotch Grove + R Jones JN-G 507 20 Silurian (Lower) Scotch Grove Jones JN-G+ 507 20 Silurian (Lower) Scotch Grove + Jones JN-D 447 20 Silurian (Upper) Stone City Quarry Jones JN-D+ 447 20 Silurian (Upper) Stone City Quarry + Jones JN-E1 449 18 Devonian (Middle) Wapsipinicon Jones JN-E1+ 449 18 Devonian (Middle) Wapsipinicon + Jones JN-E2 453 18 Devonian (Middle) Wapsipinicon Jones JN-E2+ 453 18 Devonian (Middle) Wapsipinicon + Kossuth KH-A 251 3 Quaternary Knife River Flint T A - G | H - K | L - P | R - S | T - W Click here to view or download the entire table in Excel. 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