| 释义 |
Definition of pseudomorph in English: pseudomorphnoun ˈsjuːdə(ʊ)mɔːfˈsudəˌmɔrf Crystallography A crystal consisting of one mineral but having the form of another. Example sentencesExamples - The idea that tiger's-eye is a pseudomorph - a mineral in which crystals of one material take on the form of another, which it replaces atom by atom - held sway for more than 125 years.
- Similar malachite masses weighing up to 3 tons as well as malachite pseudomorphs after cuprite crystals to 2 cm have been found in the mine.
- Close examination of the drift and crosscut revealed two crystal-bearing zones, where two large vugs were discovered that contained superb quartz encrustation pseudomorphs of calcite crystals.
- Amazing and fantastic forms of representatives of the mineral world are displayed in the exhibitions dedicated to crystals, mineral aggregates, and pseudomorphs.
- In one isolated occurrence, aggregates of small cerussite crystals form pseudomorphs, less than 2 mm across, after an unknown mineral.
verb ˈsjuːdə(ʊ)mɔːfˈsudəˌmɔrf [with object]Crystallography Replace (another substance) to form a pseudomorph. actinolite and hornblende typically pseudomorph pyroxene Example sentencesExamples - The most common secondary uranium mineral at the mine, it is typically associated with sooty black organic material and may pseudomorph it.
- Andalusite porphyroblasts that overgrow the S 1 fabric were pseudomorphed by colourless mica.
- Relict coarse, lath-shaped omphacites are variably preserved, but all are either partially retrogressed to pargasite or have been pseudomorphed by diopside-plagioclase symplectites.
- Titanite is less conspicuous and often pseudomorphed by carbonate and rutile; allanite more so in euhedral crystals up to I cm in length.
- Foord reported that bastnasite has been found pseudomorphing allanite.
Derivatives adjective sjuːdə(ʊ)ˈmɔːfɪkˌsudoʊˈmɔrfɪk Crystallography Any or all of these carbonate minerals may have acted as the now-replaced parent to the well-known pseudomorphic, rhombohedral replacements by hematite and goethite. Example sentencesExamples - As the dimensions of materials are reduced to the nanometer scale, the stabilization of pseudomorphic crystal structures that differ from their bulk equilibrium phases can occur. The pseudomorphic growth could provide a substantially larger bulk modulus and greater hardness than the average of the constituent materials in nanolayered and nanocomposite thin films.
noun sjuːdə(ʊ)ˈmɔːfɪz(ə)m Crystallography Although this is not a particularly quantitative test, it does show that complete pseudomorphism (quartz sand after calcite) had not occurred for these two specimens. Example sentencesExamples - The absence of euhedral crystals of phillipsite, even by SEM examination, suggests that the alteration may be a form of pseudomorphism.
adjective sjuːdə(ʊ)ˈmɔːfəs Crystallography Whenever this layer is found, collectors know to look carefully below it for highly silicified wood and nodules (either as agate fortifications or pseudomorphous replacement of barite concretions). Example sentencesExamples - The outer zone of the alteration halo is most extensively developed in the semi-pelitic schists, and is manifested by the pseudomorphous replacement of biotite by chlorite, rutile and quartz, and feldspar by sericite.
Origin Mid 19th century: from pseudo- 'false' + Greek morphē 'form'. Definition of pseudomorph in US English: pseudomorphnounˈso͞odəˌmôrfˈsudəˌmɔrf Crystallography A crystal consisting of one mineral but having the form of another which it has replaced. Example sentencesExamples - Similar malachite masses weighing up to 3 tons as well as malachite pseudomorphs after cuprite crystals to 2 cm have been found in the mine.
- Close examination of the drift and crosscut revealed two crystal-bearing zones, where two large vugs were discovered that contained superb quartz encrustation pseudomorphs of calcite crystals.
- In one isolated occurrence, aggregates of small cerussite crystals form pseudomorphs, less than 2 mm across, after an unknown mineral.
- Amazing and fantastic forms of representatives of the mineral world are displayed in the exhibitions dedicated to crystals, mineral aggregates, and pseudomorphs.
- The idea that tiger's-eye is a pseudomorph - a mineral in which crystals of one material take on the form of another, which it replaces atom by atom - held sway for more than 125 years.
verbˈso͞odəˌmôrfˈsudəˌmɔrf [with object]Crystallography Replace (another substance) to form a pseudomorph. actinolite and hornblende typically pseudomorph pyroxene Example sentencesExamples - Andalusite porphyroblasts that overgrow the S 1 fabric were pseudomorphed by colourless mica.
- The most common secondary uranium mineral at the mine, it is typically associated with sooty black organic material and may pseudomorph it.
- Titanite is less conspicuous and often pseudomorphed by carbonate and rutile; allanite more so in euhedral crystals up to I cm in length.
- Relict coarse, lath-shaped omphacites are variably preserved, but all are either partially retrogressed to pargasite or have been pseudomorphed by diopside-plagioclase symplectites.
- Foord reported that bastnasite has been found pseudomorphing allanite.
Origin Mid 19th century: from pseudo- ‘false’ + Greek morphē ‘form’. |