amygdaloids

At one part we have breccia of altered marl or slate in quartz, and various amygdaloids.

Missionary Travels and Researches in South Africa 2004

If he is wise he will realise that the food ought to contain a proper quantity of both proteids and amygdaloids, and, while avoiding a nitrogenous breakfast, should see to it that he obtains sufficient of what is albuminous and exogamous to prevent his breakfast from becoming monotonous.

Further Foolishness Stephen Leacock 1906

In one of these solutions the phonolite of the Cerro de Flores is to be regarded as the sole volcanic production of the tract; and we are forced to unite the pyroxenic amygdaloids with the rest of the grunsteins, in one single formation, that which is so common in the transition-mountains of Europe, considered hitherto as not volcanic.

Travels to the Equinoctial Regions of America 1851

The basis of these lower lavas is rather wacke than basalt; when it is spongy, it resembles the amygdaloids* of Frankfort-on-the-Main.

Travels to the Equinoctial Regions of America 1851

Azules, of the grunsteins of Parapara, and of the pyroxenic amygdaloids embedded in strata of grunstein, does not follow the slope of the ground from north to south, but is pretty regular towards the north.

Travels to the Equinoctial Regions of America 1851

Here, then, is a connexion sufficiently close established between the phonolites and the green slates, between the pyroxenic amygdaloids and the serpentines containing copper-ores, between volcanic substances and others that are included under the vague name of transition-traps.

Travels to the Equinoctial Regions of America 1851

Ortiz, where the amygdaloids and phonolites are connected with the grunstein, everything assumes a basaltic aspect.

Travels to the Equinoctial Regions of America 1851

The soil becomes more fertile; the rocky masses alternate with strata of clay, which appear to be produced by the decomposition of the grunsteins, the amygdaloids, and the phonolites.

Travels to the Equinoctial Regions of America 1851

The porphyries containing vitreous feldspar and hornblende, the phonolite, the greenstone, the amygdaloids, and the basalt, have forms almost as invariable as simple crystallized substances.

Travels to the Equinoctial Regions of America 1851

This regular disposition of lithoid basaltic lava and feldsparry vitreous lava is analogous to the phenomena of all trappean mountains; it reminds us of those phonolites lying in very ancient basalts, those close mixtures of augite and feldspar which cover the hills of wacke or porous amygdaloids: but why are the porphyritic or feldsparry lavas of the Peak found only on the summit of the volcano?

Travels to the Equinoctial Regions of America 1851