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This calcium carbonate was slowly deposited in crystalline form, so that in time the cracks were filled and the crushed rock firmly cemented with calcite seams.
The floor of this chamber is most beautiful. It is composed of a series of connected calcite bowls whose beautifully fluted rims are of regular and uniform height, and all are equally filled with clear, still water.
From here, for a long distance, the road was a hard, steep climb, over limestone in great variety solid limestone, tufaceous stuff, concretionary coatings, satin spar, and calcite crystals. Having passed a small pueblo, or large finca, lying in a little plain below us, we looked down upon Zinacantan.
I will now sum up the characteristics of these several minerals of this locality in the table: To Distinguish the Minerals together the one from the other. Calcite by effervescing on placing a drop of acid upon it.
But he was glad of the prospect of renewed hard work upon his claim, of promising toil to expose further the great silver-bearing veins of calcite that wound their way through the harder rock.
Upheaval, change, transformation followed, and the tide of battle turned. Cell life was powerless before the vanquishing crystals of the infiltrating calcite. Only the inorganic part of that vast world of organic life here remains in these fossils to tell the story the walls of the corals, the shells of the brachiopods, the teeth of the monster fishes.
The calcspar is extremely abundant at Bergen Hill, where it might be mistaken for many of the other minerals which I describe as occurring there, and even in preference to them, to one's great chagrin upon arriving home and testing it, to find that it is nothing but calcite.
There are the varieties of three minerals, which are very commonly met with in greater or less abundance in mineralogical trips: they are of calcite, steatite, and quartz. They occur in so many modifications of form, color, and condition that one might speedily form a cabinet of these, if they were taken when met with, and imagine it to be of great value. The first of these is calcite.
It is told that he claimed to have reviewed all the objectionable acts of his life, by which his friends understood that he occupied the motionless position not less than three weeks. Red Hall is very nearly described by its name and is quite a showy room, with the bright red walls contrasting sharply with their limited ornamentation of pure white carbonate of lime and pearly crystals of calcite.
He pointed to the wall. I followed his finger and saw a slab of stone about fifteen feet high and ten wide. At first all I noticed was the exquisite nicety with which its edges joined the blocks about it. Then I realized that its colour was subtly different tinged with grey and of a smooth, peculiar deadness. "'Looks more like calcite than basalt, I said.
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