Nickel.
Peat.

Cook County, small quantity in gabbro.

Anoka County, Coon Creek, formerly manufactured into fuel; many other localities.

Pyrite (auriferous). Has been mined in Cook County, at Pigeon Point, Lake Superior, with chalcopyrite. Itasca County, Rainy Lake region. St. Louis County, Vermilion Lake.

Quartzite. Pipestone County, quarried near Pipestone. Occurs in Brown County at New Ulm, and in Cottonwood, Pipestone, Rock, and Watonwan counties; a very hard and durable stone.

Road metal. See Granite, Limestone (crushed stone), Sandstone (concrete, crushed stone), and Trap rock.

Sand (building). Dug in Dakota County, at South St. Paul. St. Peter sandstone furnishes sand for mortar in several places. Fillmore County, St. Peter and Jordan sandstones, suitable for mortar sand, at Fillmore and Rushford. Goodhue County, Red Wing. Hennepin County, Minneapolis. Houston County, St. Peter and Cambrian sandstones quarried near Caledonia and Union. Nicollet County, Courtland. Rice County, near Northfield. Rock County, Luverne. St. Louis County, Lake Superior, near Duluth. Scott County, Jordan. Washington County, Stillwater. Winona County, Winona.

Sand (filter). Goodhue County, dug at Red Wing.

Sand (molding). Dug in Pine County, at Kerrick. Ramsey County, St. Paul. Rice County, near Northfield. St. Louis County, Duluth. Washington County, Stillwater.

Sandstone (building). Pine County, quarried at Sandstone on Kettle River; fine quality. Sandstone (concrete, crushed stone). Quarried in Brown County, at New Ulm.

Rock Scott

Chisago County, at Taylors Falls. Hennepin County, near Fort Snelling. Pine County, Banning. Pipestone County, Jasper and Pipestone. County, Luverne. St. Louis County, Duluth, near Fond du Lac. County, Jordan along Sand Creek. Winona County, Dresbach. Cook County, small quantity found in Animikie rocks. Slate (roofing). Has been quarried in Carlton County, at Thomson. St. Louis County, a few miles west of Duluth. In favorable situations and large quantity at Vermilion Lake and other points in northeastern Minnesota.

Silver.

Specularite. See Hematite (specular iron ore).

Sphalerite (zinc blende). Itasca County, was mined in Rainy Lake region. Washington County, Stillwater. Small scattered masses at several places in "Trenton" limestone in southeastern Minnesota.

Trap rock.

Quarried in Chisago County at Taylors Falls and in St. Louis County at Duluth.

Tripoli (polishing powder). Washington County, occurs at Stillwater between

bluffs of Browns Creek.

Zinc. See Sphalerite.

MISSISSIPPI.

Brown iron ore (limonite). Benton, Lafayette, Marshall, and Tippah counties, in considerable quantities associated with siderite. Tishomingo County, Iuka Lake, not used; common in orange sand but unimportant. Burrstone. Attala, Carroll, Leake, and Neshoba counties furnish hard quartzitic sandstone used locally for building stone.

Cement material. Suitable material for Portland and natural cement is found in the northeastern part of the State, in Alcorn, eastern Chickasaw, Clay, Itawamba, Lee, western Lowndes, western Monroe, Noxubee, Oktibbeha, Prentiss, and Tishomingo counties and in a belt extending nearly east and west across the center of the State, including parts of Clarke, Hinds, Jasper, Rankin, Scott, Smith, Warren, Wayne, and Yazoo counties; none produced.

Clay. Clay is found in nearly every county in the State. "Buckshot" clay burned and used as road metal at Clarksdale and elsewhere, Coahoma County.

Clay (brick). Brick is made locally from clay found in various formations in the following counties: Adams, Alcorn, Amite, Attala, Chickasaw, Claiborne, Clarke, Clay, Coahoma, Copiah, Covington, De Soto, Forrest, Franklin, Greene, Grenada, Hancock, Harrison, Hinds, Holmes, Jackson, Jones, Lafayette, Lamar, Lauderdale, Lee, Leflore, Lincoln, Lowndes, Madison, Monroe, Montgomery, Newton, Noxubee, Oktibbeha, Panola, Pike, Pontotoc, Prentiss, Quitman, Smith, Sunflower, Tallahatchie, Tate, Tippah, Tunica, Union, Warren, Washington, Wayne, Webster, Wilkinson, Winston, Yalobusha, and Yazoo.

Clay (cement). Tishomingo County, Yellow Creek and Mingo.

Clay (fire). Fire brick is made in Jefferson County at Stonington. Marshall County, Holly Springs. Smith County, Taylorville.

Clay (kaolin). Itawamba. County, Fulton. Tishomingo County, Iuka. Clay (pottery). Pottery is made from the clays in Harrison County, at Biloxi. Itawamba County, at Miston and vicinity. Jefferson County, at Stonington. Lauderdale County, at Lockhart and Lauderdale. Marshall County, Holly Springs. Tishomingo County, Lake Coma. Webster County, Mathiston. Winston County, western part. Excellent clays for pottery, stoneware, and terra cotta abundant at Oxford, Lafayette County; not used at present.

Gypsum. Rankin County near Cato, block 10 by 12 inches once found; no value. Gypsiferous marls in Attala, Carroll, Hinds, Holmes, Leake, Madison, Rankin, and Scott counties.

See Brown iron ore and Siderite.

Iron. Lignite (brown coal). Found over a large part of the State. Of possible future importance in Benton, Calhoun, Choctaw, Holmes, Itawamba, Kemper, Lafayette, Lauderdale, Monroe, Panola, Pontotoc, Scott, Tate, Webster, Winston, and Yalobusha counties. No production at present. Thickest beds are 20 inches near Reedsville, Itawamba County, and two beds each 5 feet thick, separated by less than 2 feet of clay, at Tchula, Holmes County.

Limestone.

Quarried for building material for local use in Clarke, Jasper, Noxubee, Smith, and Wayne counties. Burned for lime in Jasper, Rankin, and Wayne counties.

Limestone (hydraulic). See Cement material.

Limonite.
Marl.

See Brown iron ore.

Marls suitable for local use as fertilizer are found in Attala, Carroll. Chickasaw, Claiborne, Clarke, Hinds, Holmes, Leake, Lowndes, Madison, Pontotoc, Rankin, Scott, Smith, Tippah, Tishomingo, Warren, and Wayne counties.

Millstone. See Burrstone.

Ocher (mineral paint). Tishomingo County, extensive beds of red ocher, some yellow ocher near Iuka; was formerly mined and shipped.

Road metal. Burned clay used at Clarksdale, Coahoma County. Clay suitable for this use found throughout the Yazoo delta region. Crushed limestone from Tishomingo County used locally. Also chert gravel and beds of fine chert near Tennessee River in northeastern Tishomingo and in Itawamba counties. Other suitable material is burrstone of Attala, Clarke, Grenada, Lauderdale, Leake, Montgomery, Neshoba, and Newton counties. Sand (building). Dug in Carroll County at Carrollton; Forrest County at Hattiesburg; Hinds County at Jackson; Warren County near Vicksburg; Washington County at Greenville. Immense quantity at Oxford, Lafayette County, and in most of the north-central counties where the Wilcox group outcrops.

Sand (glass). Hinds County, occurs at Byram and Jackson and elsewhere along Pearl River; Jackson County, large deposit of dune sand on Horn Island, formerly used; Tishomingo County, large deposit of fine-grained silica 1 mile from Tennessee River now worked.

Sand (molding). Dug in Alcorn County at Corinth; Hinds County at Jackson. Sandstone. Attala, Carroll, Leake, and Neshoba counties, burrstone locally used. Claiborne County, sandstones of Grand Gulf region of inferior quality. Hinds County, has been quarried near Raymond. Lafayette, Marshall, Tippah, and Yalobusha counties, some stone suitable for building. Rankin County, quarried at Starr. Tishomingo County, 3 miles northeast of Tishomingo, on railroad, new quarry of excellent building stone just opened along Big Bear Creek; Bay Spring, Gardner, on Rock Creek, and below Scott's mill.

Siderite. Notable deposits of iron carbonate have recently been discovered in Benton, Lafayette, Marshall, and Tippah counties. Pig iron has been produced from this iron field at Winborn.

MISSOURI.

Anglesite. Jasper County, Joplin district. In fine tabular crystals on galena in lead and zinc mines in southeast and southwest Missouri.

Asphalt (bitumen, mineral pitch). Barton County, occurs impregnating sandstone and is quarried near Liberal. Lafayette County, in small quantity near Higginsville.

Azurite (blue carbonate of copper). Crawford, Dent, and Phelps counties, found in small quantities in many of the hematite deposits. Franklin County, at one time mined and smelted near Sullivan.

Barite (heavy spar). Cole County, mined at Eugene, Henley, and Hickory Hill. Franklin County, at Morrellton and St. Clair. Jefferson County. Miller County, at Etterville and Bagnell. Morgan County, at Versailles. St. Francois County, Blackwell. Washington County, Barytes, Cadet, Fertile, and elsewhere. Occurs as important gangue of central and southeastern lead regions.

Brown iron ore (limonite). Franklin County, mixed with ocher and chert in cavities at Bowlen Bank, Iron Hill, and Stanton Hill Bank, dug from pits near Moselle, and shipped; Howell County, Lamons mine, near West Plains, mined and shipped to lead smelters in Kansas City; Madison County, Mine Lamotte, formerly used mainly for flux. Found chiefly in Cambrian limestones widely distributed over counties of the southern and central parts of the State; has been mined in numerous localities. Cadmium. See Greenockite.

Calamine (silicate of zinc). Jasper County, mined in Joplin district. Lawrence County, at Aurora; Newton County, at Granby.

Calcite. Jasper County, occurs in Joplin district, museum specimens.

Cement (natural). Clinton County, shales and limestone suitable for natural cement in vicinity of Plattsburg.

Cement material (Portland). Ordovician and Devonian limestones and shales in narrow belt along eastern border of State from Ralls County on north to Cape Girardeau County on south. Mississippian limestones over extensive areas in northeast and southwest Missouri. Pennsylvanian ("Coal Measures ") limestones and shales in northern and western parts of State best adapted for Portland cement. Plants at Cement City, east of Kansas City; Prospect Hill and Continental, near St. Louis; and Cape Girardeau.

Cerusite (carbonate of lead). Jasper County, mined in Joplin district. Newton County, Granby district; and in other mines in Dade, Greene, Lawrence, and Madison counties.

Chalcocite (copper glance).

Occurs in subordinate quantity in Crawford County, in Sullivan mines. Shannon County, Slater and Tyrell mines near Eminence. Ste. Genevieve County, in Cornwall mines. Chalcopyrite (copper pyrites). Franklin County, irregularly distributed through clay at Sullivan mine. Madison County, disseminated through limestone at Mine Lamotte, and mined at Mine Lamotte and Fredericktown. Shannon County, mined at Slater and Jerktail mines. Ste. Genevieve County, mined at Ste. Genevieve mines. Widely distributed in small quantities in Joplin district, Jasper, Lawrence, and Newton counties.

Clay (brick). Widely distributed and utilized in nearly every county of the State.

Clay (brick shale). Barry County, numerous beds of shale at Golden City and elsewhere. Camden County. Cape Girardeau County, in Pennsylvanian ("Coal Measures") rocks near Jackson City. Clay County, extensive Pennsylvanian shale along Missouri River bluffs at Liberty Landing and Wayne City. Dade County, near Everton and Lockwood. Daviess County, near Gallatin and elsewhere along streams. Gasconade County, Owensville. Greene County, near Springfield and Willard. Iron County, near Belleview and Kaolin. Livingston County, several Pennsylvanian shale beds along streams. McDonald County, Sugar Creek and Mill Creek, in southern portion of county. Mercer County, near Princeton. Platte County, in Pennsylvanian rocks along river. Polk County, near Humansville. Ralls County, Louisiana to Hannibal along Mississippi River bluffs. Saline County, Slater, near Marshall, and elsewhere. Scott County, near Oran, and Benton. Shelby County, near Lakenan. St. Louis County, Prospect Hill and Cheltenham. Sullivan County, near Milan. Webster County, near Marshfield. Wright County, near Mansfield.

Clay (fire). Mined in the following localities: Audrain County, at Mexico and Vandalia. Boone County, near Columbia. Callaway County, at Fulton. Crawford County, at Leasburg, flint clay. Franklin County, at Union and Washington; flint fire clays occur throughout the county. Gasconade County, at Canaan, Owensville, and Rosebud. Johnson County, at Knobnoster. Linn County, at Laclede. Montgomery County, at Jonesburg. Morgan County, at Versailles. Newton County, at Gregg. Phelps County. Shelby County, at Lakenan. St. Charles County, has been mined near St. Charles; plastic. St. Louis County, at Cheltenham and St. Louis; also glass-pot clay. Stoddard County, near Dexter. Warren County, shipped from Truesdail and Pendleton.

Clay (flint). Boone County, occurs near Columbia. Crawford County, extensive deposits near Wesco. Franklin County, old pit near Washington. Maries County, excellent white in Lanes Prairie district. Monroe County, near Stoutsville, and Clapper. Montgomery County, mined at Jonesburg. Osage County, excellent quality abundant in central and southern part. Phelps County has been extensively worked at Knobview, Rolla, and St. James. St. Clair County, small deposits occur near Baker and elsewhere on Osage River. St. Louis County, near Glencoe and elsewhere. Clay (kaolin). Bollinger County, large deposits near Glen Allen, mined and shipped for pottery. Cape Girardeau County, pure white near Jackson, mined and shipped for paints, etc.; Morgan City, in Buffalo lead mines near Versailles, mined and shipped for enameling work. Occurs also in Carter County, at Chilton. Cooper County, Clifton City. Howell County, near West Plains and Sterling, and near Willard Springs. Iron County, in old pits and prospects at Kaolin, 12 miles west of Iron Mountain. Madison County, near Fredericktown. Oregon County, near Thayer. Perry County, near Silver Lake. Reynolds County, near Centerville and Lesterville. Ripley County, near Doniphan. Shannon County, near Winona, and old pits near Monteer. Texas County, in vicinity of Sargent and Wayne counties, near Brunot. Clay (pottery). Cass County, dug near Harrisonville on Grand River. Cooper County, near Boonville. Franklin County, near Union. Henry County, Calhoun. Jasper County, near Webb City. Jefferson County, excellent ball clay mined at Regina. Johnson County, Knobnoster and Mont