Turquois

[Titelblatt]
II. Turquois.

ANNALS OF PHILOSOPHY;
OR, MAGAZINE OF
CHEMISTRY, MINERALOGY, MECHANICS,
NATURAL HISTORY,
AGRICULTURE, AND THE ARTS.

THOMAS THOMSON

, M.D.F.R.S.L. & E.F.L.S. &c.
member of the geological society, of the wernerian society, and of the imperial
medico-cihrurgical academy of petersburgh.

VOL. I.
JANUARY TO JUNE, 1813.

London:
Printed by C. Baldwin, New Bridge-street;
for ROBERT BALDWIN, paternoster-row.
sold also by w. blackwood, edinburgh; and j. cumming, dublin.

1813

[Seite vi] [Seite vii] [[479]]

II. Turquois.

[Seite 217]

Dr. Langsdorf, who accompanied Captain Krusenstern in his
voyage round the world, presented to Blumenbach an uncut
turquois, from Nischabar, in Eastern Persia. From the specimen
it appears certain that this substance is not a petrifaction, but a
particular mineral species which occurs in nests in beds of clay.
According to the analysis of Dr. John, it appears to be nearly
allied to mollite (siderite).

Table of contents

II. Turquois.