variscite वाक्य
उदाहरण वाक्य
मोबाइल
- Variscite often contains white veins of the calcium aluminium phosphate mineral crandallite.
- It occurs in association with dufrenite, apatite, fluellite, wavellite, variscite and leucophosphite.
- Variscite from Nevada typically contains black spiderwebbing in the matrix and is often confused with green turquoise.
- Most of the Nevada variscite recovered in recent decades has come from mines located in Lander County.
- Appreciation of the color ranges typically found in variscite have made it a popular gem in recent years.
- The dihydrate, AlPO 4 ?H 2 O is found as the minerals variscite and meta-variscite.
- The dihydrate, AlPO 4 ?H 2 O is found as the minerals variscite and meta-variscite.
- Variscite is sometimes used as a semi-precious stone, and is popular for carvings and ornamental use.
- At times, materials which may be turquoise or may be variscite have been marketed as " variquoise ".
- Stones which are opaque or semi-opaque such as opal, turquoise, variscite, etc . are commonly cut as cabochons.
- It occurs in association with crandallite and variscite in fractures in aluminous metamorphic rock, in hydrothermal regions and in phosphate rock deposits.
- Some of the green to green yellow shades may actually be variscite or faustite, which are secondary phosphate minerals similar in appearance to turquoise.
- It is found in association with fluorapatite, wavellite, phosphosiderite, strengite, aldermanite, cacoxenite, variscite, turquoise, fluorite and quartz.
- Variscite is a secondary mineral formed by direct deposition from phosphate-bearing water that has reacted with aluminium-rich rocks in a near-surface environment.
- The Lucin area is a popular stop for rockhounds looking for an apple-green chert-like phosphate mineral Variscite, also known as Utahlite and Lucinite.
- Other natural materials occasionally confused with or used in lieu of turquoise include : variscite and faustite; chrysocolla ( especially when impregnating quartz ); lazulite; smithsonite; hemimorphite; wardite; and a fossil bone or tooth called odontolite or " bone turquoise ", coloured blue naturally by the mineral vivianite.
- In the tropics, rather than taranakite, the minerals that form from guano-derived phosphatization of igneous rocks are variscite ( AlPO 4 ?H 2 O ), metavariscite ( AlPO 4 �H 2 O ), barrandite ( ( Al, Fe 3 + ) PO 4 ?H 2 O ), strengite and phosphosiderite ( Fe 3 + PO 4 ?H 2 O ).
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