Difference between revisions of "Zoisite"
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thulite (pink); tanzanite (blue); zoisita (Esp.); zoisyt (Pol.); zoisite (Port.); Zoisit (Deut.); zoisiet (Ned.) | thulite (pink); tanzanite (blue); zoisita (Esp.); zoisyt (Pol.); zoisite (Port.); Zoisit (Deut.); zoisiet (Ned.) | ||
| − | == | + | == Physical and Chemical Properties == |
| − | Orthorhombic system with long, striated, prismatic crystals. Cleavage is very good lengthwise. | + | * Orthorhombic system with long, striated, prismatic crystals. |
| − | + | * Cleavage is very good lengthwise. | |
| − | Luster = vitreous to pearly. Streak = white. Fracture = uneven to conchoidal. | + | * Luster = vitreous to pearly. |
| − | + | * Streak = white. | |
| − | Fluorescent, especially thulite. | + | * Fracture = uneven to conchoidal. |
| + | * Fluorescent, especially thulite. | ||
{| class="wikitable" | {| class="wikitable" | ||
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|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 3.25-3.37 | + | | 3.25-3.37 g/ml |
|- | |- | ||
! scope="row"| Refractive Index | ! scope="row"| Refractive Index | ||
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|} | |} | ||
| − | == | + | == Resources and Citations == |
| − | |||
| − | |||
| − | + | * Mineralogy Database: [http://www.webmineral.com/data/Zoisite.shtml Zoisite] | |
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 435 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 435 | ||
| − | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "zoisite" | + | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "zoisite" [Accessed December 11, 2001]. (color photo)(tech info) |
* C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979 | * C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979 | ||
| − | * Wikipedia | + | * Wikipedia: http://en.wikipedia.org/wiki/Zoisite (Accessed Mar. 1, 2006) |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Revision as of 09:47, 27 May 2022
Description
An epidote type mineral used as an ornamental stone. Zoisite was named for Baron Zois van Edelstein (1747-1819). It is a lustrous transparent to translucent stone whose color may be grayish-white, peach, pink (thulite), blue (tanzanite) or green. Zoisite has been quarried in Tanzania, Austria, Switzerland, Norway (Telemark), Italy (Piedmont), Germany, Scotland, Mexico and the U.S.(Tennessee, Massachusetts, Pennsylvania).
Synonyms and Related Terms
thulite (pink); tanzanite (blue); zoisita (Esp.); zoisyt (Pol.); zoisite (Port.); Zoisit (Deut.); zoisiet (Ned.)
Physical and Chemical Properties
- Orthorhombic system with long, striated, prismatic crystals.
- Cleavage is very good lengthwise.
- Luster = vitreous to pearly.
- Streak = white.
- Fracture = uneven to conchoidal.
- Fluorescent, especially thulite.
| Composition | Ca2(AlOH)Al2(SiO4)3 |
|---|---|
| Mohs Hardness | 6.0 - 6.5 |
| Density | 3.25-3.37 g/ml |
| Refractive Index | 1.685 - 1.725 |
Resources and Citations
- Mineralogy Database: Zoisite
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 435
- Encyclopedia Britannica, http://www.britannica.com Comment: "zoisite" [Accessed December 11, 2001]. (color photo)(tech info)
- C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979
- Wikipedia: http://en.wikipedia.org/wiki/Zoisite (Accessed Mar. 1, 2006)