hydrophanen.
/ˈhʌɪdrəfeɪn/, U.S. /ˈhaɪdrəˌfeɪn/ Mineralogy.
A variety of opaque or partly translucent opal which absorbs water upon immersion and becomes transparent.
ΘΚΠ
society > occupation and work > materials > raw material > gem or precious stone > opal > [noun] > varieties of
girasol1588
oculus mundi1661
eye of the world1730
hydrophane1784
cacholong1791
pitchstone1794
pyrophane1794
semi-opal1794
fire opal1811
sun opal1818
isopyre1827
alumocalcite1832
jasper-opal1843
opal jasper1848
resin opal1850
pitch opal1861
jasp-opal1868
opal-agate1868
harlequin1873
harlequin opal1887
wax-opal1896
potch1897
pinfire1902
moss opal1904
nobby1919
the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > quartz > amorphous quartz or opal > others
girasol1588
oculus mundi1661
hydrophane1784
cacholong1791
pitchstone1794
pyrophane1794
semi-opal1794
wood-stone1794
fire opal1811
wood-opal1816
sun opal1818
isopyre1827
jasper-opal1843
opal jasper1848
resin opal1850
natural glass1853
pitch opal1861
vitrite1866
jasp-opal1868
opal-agate1868
pearl opal1872
harlequin1873
harlequin opal1887
wax-opal1896
potch1897
moss opal1904
nobby1919
1784 R. Kirwan Elements Mineral. 114 Opals and chalcedonies, which by admitting water within their pores, are called hydrophanes.
1833 N. Arnott Elements Physics (ed. 5) I. 36 The stone called hydrophane (agate) is opaque, until dipped into water, when it absorbs..one sixth of its weight of the water, and..gives passage to light.
1875 R. D. Blackmore Alice Lorraine III. xxiii. 306 Changed its dullness (like a hydrophane immersed) into glancing and reflecting play of tender light and life.
This entry has not yet been fully updated (first published 1899; most recently modified version published online March 2022).
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n.1784