Below this were strata of trachitic breccia and augite; the formation was then seamy to an unknown depth.    From Wordnik.com.  [Scientific American Supplement, No. 392, July 7, 1883] Reference

Hornblende and augite are two widely distributed minerals, which are so similar in composition and properties that they may be considered together.    From Wordnik.com.  [Elements of Agricultural Chemistry] Reference

Taken, then, a liquid which is heavy -- the most convenient is methylene iodide, whose specific gravity is 3.3 -- a fragment of zircon will sink in this, and a fragment of tourmaline will float, but a fragment of the mineral augite, whose specific gravity is also 3.3, will remain exactly suspended.    From Wordnik.com.  [Scientific American Supplement, No. 1082, September 26, 1896] Reference

They are divisible into two great classes, which have received the names of diorite and dolerite, the former a mixture of albite and hornblende, the latter of augite and labradorite, sometimes with considerable quantities of a sort of oligoclase containing both soda and lime, and of different kinds of zeolitic minerals.    From Wordnik.com.  [Elements of Agricultural Chemistry] Reference

This is more especially true of chlorite, schorl, hornblende and augite.    From Wordnik.com.  [A Text-book of Assaying: For the Use of Those Connected with Mines.] Reference

"So you don't know the difference between augite and hornblende?" he once enquired.    From Wordnik.com.  [South Wind] Reference

On the formation of jasper by the action of dioritic porphyry, augite, and by persthene rock, see Rose, bd. ii., s. 169, 187, und 192.    From Wordnik.com.  [COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1] Reference

Composite rocks are definite associations of certain crytonostic, simple minerals, as feldspar, mica, solid silex, augite, and nepheline.    From Wordnik.com.  [COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1] Reference

Should we conclude from this position that they are of more recent formation than the lithoid basaltic lava, which contains olivine and augite?.    From Wordnik.com.  [Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1] Reference

Unite magnesia to silica, and we have, according to the proportions, hornblende or augite, two minerals which abound in many varieties of rock.    From Wordnik.com.  [Religion and Chemistry] Reference

The crystals which Mr. Friesleben and myself have made known under the denomination of foliated olivine (blattriger olivin) belong, according to Mr. Karsten, to the pyroxene augite.    From Wordnik.com.  [Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1] Reference

We are not, it appears to me, more justified in applying the term telluric to the nickel and iron, the olivine and pyroxene (augite), found in meteoric stones, than in indicating the.    From Wordnik.com.  [COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1] Reference

The bones were dug up by Mr. Walter Mantell from a bed of marly sand, containing magnetic iron, crystals of hornblende and augite, and the detritus of augitic rocks and earthy volcanic tuff.    From Wordnik.com.  [COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1] Reference

'Euphotide' and serpentine, containing sometimes crystald of augite and uralite instead of diallage, are thus nearly allied to another more frequent, and I might almost say, more 'energetic' eruptive rock -- augitic porphyry.    From Wordnik.com.  [COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1] Reference

The geognostic phenomena which we are now describing, and which excite the imagination as well as the powers of the intellect, are the result of the action of augite porphyry manifested in its elevating, destroying, and transforming force.    From Wordnik.com.  [COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1] Reference

In the Jerome or Verde district of central Arizona, folded pre-Cambrian greenstones and sediments were invaded by masses of quartz-porphyry, and after further deformation, rendering many of the rocks schistose, were intruded by an augite-diorite.    From Wordnik.com.  [The Economic Aspect of Geology] Reference

They contain vitreous feldspar, and augite, and are the same as the celebrated columnar porphyries of the island of Panaria, which, without having been part of a current of lava, seem raised up in the form of hillocks, like many of the porphyries in Auvergne, in the.    From Wordnik.com.  [Travels to the Equinoctial Regions of America] Reference

Their origin is not connected with any determined species of rock: they break out in basalt, trachyte, leucitic porphyry (somma), or in doleritic mixtures of augite and labradorite; and hence arise the different nature and external conformation of these inclosures of craters.    From Wordnik.com.  [COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1] Reference

When we come to study the chemical composition and the microscopical structure of lavas, however, we shall find that there are many respects in which they differ entirely from these artificial products, they consisting chiefly of felspar, or of this substance in association with augite or hornblende.    From Wordnik.com.  [The San Francisco calamity by earthquake and fire] Reference

Although vocanoes are justy termed in many languages "fire-emitting mountains," mountains of this kind are not formed by the gradual accumulation of ejected currents of lava, but their origin seems rather to be a general consequence of the sudden elevation of soft masses of trachyte or labradoritic augite.    From Wordnik.com.  [COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1] Reference

Davy and Gay-Lussac have already made the ingenious remark, that two bodies highly inflammable, the metals of soda and potash, have probably an important part in the action of a volcano; now the potash necessary to the formation of alum is found not only in feldspar, mica, pumice-stone, and augite, but also in obsidian.    From Wordnik.com.  [Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1] Reference

They contain vitreous feldspar, and augite, and are the same as the celebrated columnar porphyries of the island of Panaria, which, without having been part of a current of lava, seem raised up in the form of hillocks, like many of the porphyries in Auvergne, in the Euganean mountains, and in the Cordilleras of the Andes.    From Wordnik.com.  [Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1] Reference

At the destruction of Riobamba, in the year 1797, when the shocks were not attended by any outbreak of the neighboring volcano, a singular mass called the 'Moya' was uplifted from the earth in numerous continuous conical elevations, the whole being composed of carbon, crystals of augite, and the silicious shields of infusoria.    From Wordnik.com.  [COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1] Reference

Part i., p. 999); olivine and augite (Mitscherlich and Berthier, in the.    From Wordnik.com.  [COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1] Reference

'Annalen', bd. xxxiii., s. 337); crystals of augite in scoriae at Sahle (Mitscherlich, in the 'Abhandl. der Akad. zu.    From Wordnik.com.  [COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1] Reference

34 constituent minerals completely or partially, such as felspar, olivine, augite, and leave more resistant substances to be ultimately washed down as fine sand or mud into the river.    From Wordnik.com.  [The Birth-Time of the World and Other Scientific Essays] Reference

Mr. Karsten, to the pyroxene augite.    From Wordnik.com.  [Travels to the Equinoctial Regions of America] Reference