tautoclinn.

Brit.

/ˈtɔːtəklɪn/, U.S.

/ˈtɔdəˌklɪn/,

/ˈtɑdəˌklɪn/

Forms: 1800s– tautoclin, 1800s– tautocline, 1800s– tautoklin.

Origin: A borrowing from German. Etymon: German Tautoklin.

Etymology: < German Tautoklin ( A. Breithaupt Paragenesis der Mineralien (1849) 154), use as noun of tautoklin tautokline adj. The mineral is so called ‘because it has the same rhombohedral angle as dolomite’ ( A. H. Chester Dict. Names Minerals (1896) at cited word).The following earlier quot. probably shows tautokline adj. (qualifying calc spar), but may have been apprehended as showing a noun (and hence, the mineral name) by later writers:1838 Rep. 6th Meeting Brit. Assoc. Advancem. Sci. 1837 184 The same observer [sc. Breithaupt] found the density of a calc spar of 105°·8' to be 2·741, and of another (tautokline) of 106°·10' to be 2·968.

Mineralogy. Now rare or disused.

= ankerite n.

ΘΚΠ

the world > the earth > minerals > types of mineral > carbonates > [noun] > hexagonal > ankerite

ankerite1843

tautoclin1854

1854 Edinb. New Philos. Jrnl. 56 357 In the Reicher Seegen mine at Sachsenburg, pearl-spar, barytite, and tautoklin, are repeated at one place twenty-two times, without a vestige of ore.

1856 Amer. Jrnl. Sci. 72 251 Breunnerite..—The Tautoclin of Breithaupt.

1873 H. B. Cornwall et al. tr. Plattner's Man. Anal. Blowpipe (ed. 2) 144 Brown spar (ankerite, tautoclin).

1908 B. Symons Genesis Metallic Ores xiii. 428 The oldest, or true Barytes and Lead lodes, include a gangue of barytes, lime-barytes, fluorspar, quartz or hornstone, tautoclin, and calcite.

1957 Bull. U.S. Geol. Surv. No. 1052. 83 (table) Dolomite (gurhofite) Tautoklin.

This entry has been updated (OED Third Edition, June 2014; most recently modified version published online March 2022).

单词	tautoclin
释义	tautoclinn. Brit. /ˈtɔːtəklɪn/, U.S. /ˈtɔdəˌklɪn/, /ˈtɑdəˌklɪn/ Forms: 1800s– tautoclin, 1800s– tautocline, 1800s– tautoklin. Origin: A borrowing from German. Etymon: German Tautoklin. Etymology: < German Tautoklin ( A. Breithaupt Paragenesis der Mineralien (1849) 154), use as noun of tautoklin tautokline adj. The mineral is so called ‘because it has the same rhombohedral angle as dolomite’ ( A. H. Chester Dict. Names Minerals (1896) at cited word).The following earlier quot. probably shows tautokline adj. (qualifying calc spar), but may have been apprehended as showing a noun (and hence, the mineral name) by later writers:1838 Rep. 6th Meeting Brit. Assoc. Advancem. Sci. 1837 184 The same observer [sc. Breithaupt] found the density of a calc spar of 105°·8' to be 2·741, and of another (tautokline) of 106°·10' to be 2·968. Mineralogy. Now rare or disused. = ankerite n. ΘΚΠ the world > the earth > minerals > types of mineral > carbonates > [noun] > hexagonal > ankerite ankerite1843 tautoclin1854 1854 Edinb. New Philos. Jrnl. 56 357 In the Reicher Seegen mine at Sachsenburg, pearl-spar, barytite, and tautoklin, are repeated at one place twenty-two times, without a vestige of ore. 1856 Amer. Jrnl. Sci. 72 251 Breunnerite..—The Tautoclin of Breithaupt. 1873 H. B. Cornwall et al. tr. Plattner's Man. Anal. Blowpipe (ed. 2) 144 Brown spar (ankerite, tautoclin). 1908 B. Symons Genesis Metallic Ores xiii. 428 The oldest, or true Barytes and Lead lodes, include a gangue of barytes, lime-barytes, fluorspar, quartz or hornstone, tautoclin, and calcite. 1957 Bull. U.S. Geol. Surv. No. 1052. 83 (table) Dolomite (gurhofite) Tautoklin. This entry has been updated (OED Third Edition, June 2014; most recently modified version published online March 2022). < n.1854
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