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BRAZIL.

A kyanitic schist from Serra do Gigante, near Diamantina, was analyzed at the request of Prof. O. A. Derby, who describes the rock in Amer. Journ. Sci., 4th ser., vol. 7, p. 343. Analysis by Hillebrand, record No. 1783. Contains kyanite, chlorite, sericite, quartz, and rutile.

A. Bulk analysis of the schist.

B. Portion soluble in hydrochloric acid.

C. Portion soluble in strong sulphuric acid.

D. Residue insoluble in sulphuric acid.

The bracketed figures are deduced from other columns than the one in which they appear.

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STONY METEORITES.

1. ROCKWOOD, TENNESSEE.

From the Crab Orchard Mountains, Cumberland County, Tennessee, about 8 miles west of Rockwood. Analyzed by J. E. Whitfield, record No. 735, and described by him in Bull. 60, p. 103.

A. Analysis of the material as a whole.

B. Nickel-iron separated.

C. Nodule from meteorite.

Forms not over 16 per cent of the mass.

D. Portion of nodule, 94 per cent, insoluble in hydrochloric acid. May be enstatite.

The stony part of the meteorite appears to be mainly pyroxene and anorthite. Fe,O, was not determined, and FeO represents the total iron oxide.

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2. HAMBLEN COUNTY, TENNESSEE.

Mass of about half and half stone and iron found about 6 miles WSW. of Morristown. Analyzed by L. G. Eakins, and described in Bull. 113, p. 61.

A. The nickel-iron.

B. The part of the stony portion soluble in hydrochloric acid; 37.63 per cent, recalculated to 100, with sulphur deducted.

C. Insoluble part of the stony portion; 62.10 per cent, recalculated to 100.

A petrographic description of this meteorite is given by Merrill in Amer. Journ. Sci., 4th series, vol. 2, p. 149, together with an analysis of the feldspar. He finds it to contain, in addition to the nickel-iron, enstatite, diallage, anorthite, olivine or monticellite, oldhamite or secondary gypsum derived from oldhamite, lawrenceite, troilite, and schreibersite.

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3. WINNEBAGO COUNTY, IOWA.

Fell May 2, 1890. Sp. gr. 3.804, 28°.5. Analyzed by L. G. Eakins, record No. 1190, and described in Bull. 78, p. 95.

[blocks in formation]

B. Silicate soluble in hydrochloric acid, calculated to 100 per cent. C. Insoluble silicate, recalculated to 100 per cent. The Cr2O, probably represents chromite.

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4. TANEY COUNTY, MISSOURI.

Analysis by J. E. Whitfield, record No. 736. See Bull. 60, p. 106. Sp. gr., 4.484.

A. The separated nickel-iron.

B. The stony portion as a whole.

C. Silicates soluble in hydrochloric acid, recalculated to 100 per cent. D. Insoluble silicates, recalculated to 100 per cent.

[blocks in formation]

Fell July 25, 1890.

Analyzed by L. G. Eakins, record No. 1227, and

described in Bull. 90, p. 45. Sp. gr. 3.49, 21.6°.

[blocks in formation]

B. Silicates soluble in hydrochloric acid, calculated to 100 per cent. C. Insoluble silicates, calculated to 100 per cent.

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