Pelagosite: Difference between revisions
Content deleted Content added
mNo edit summary |
added infobox template |
||
| (11 intermediate revisions by 9 users not shown) | |||
| Line 1: | Line 1: | ||
{{Infobox mineral |
|||
| ⚫ | '''Pelagosite''' is a |
||
| name = Pelagosite |
|||
| boxwidth = |
|||
| boxbgcolor = |
|||
| image = |
|||
| imagesize = |
|||
| alt = |
|||
| caption = |
|||
| struct image = |
|||
| struct caption = |
|||
| struct imagesize = |
|||
| struct2 image = |
|||
| struct2 caption = |
|||
| struct2 imagesize= |
|||
| SMILES = |
|||
| Jmol = |
|||
| category = |
|||
| formula = [[calcium|Ca]][[carbon|C]][[oxygen|O]]<sub>3</sub> |
|||
| IMAsymbol = |
|||
| molweight = |
|||
| strunz = |
|||
| dana = |
|||
| system = |
|||
| class = |
|||
| symmetry = |
|||
| unit cell = |
|||
| color = White, grey, brown |
|||
| colour = |
|||
| habit = |
|||
| twinning = |
|||
| cleavage = |
|||
| fracture = |
|||
| tenacity = |
|||
| toughness = |
|||
| mohs = |
|||
| luster = Pearly |
|||
| streak = |
|||
| diaphaneity = |
|||
| gravity = |
|||
| density = |
|||
| polish = |
|||
| opticalprop = |
|||
| refractive = |
|||
| birefringence = |
|||
| pleochroism = |
|||
| 2V = |
|||
| dispersion = |
|||
| extinction = |
|||
| length fast/slow = |
|||
| fluorescence = |
|||
| absorption = |
|||
| melt = |
|||
| Curie temp = |
|||
| fusibility = |
|||
| diagnostic = |
|||
| solubility = |
|||
| impurities = |
|||
| alteration = |
|||
| other = |
|||
| prop1 = |
|||
| prop1text = |
|||
| references = |
|||
| var1 = |
|||
| var1text = |
|||
| var2 = |
|||
| var2text = |
|||
| var3 = |
|||
| var3text = |
|||
| var4 = |
|||
| var4text = |
|||
| var5 = |
|||
| var5text = |
|||
| var6 = |
|||
| var6text = |
|||
}} |
|||
| ⚫ | '''Pelagosite''' is a form of [[pisolitic]] [[aragonite]] ([[calcium|Ca]][[carbon|C]][[oxygen|O]]<sub>3</sub>) whose [[Type locality (geology)|type locality]] is the [[Croatia]]n island group of [[Palagruža]] (Italian ''Pelagosa'', whence the name) in the middle of the [[Adriatic]]. It was identified by R. Moser in ''Mineralogische und petrographische Mitteilungen'', new series (Vienna) '''1''' (1878), 174. It has a higher content of [[magnesium carbonate]], [[strontium carbonate]], [[calcium sulfate]] ([[gypsum]]) and [[silicon dioxide]]([[silica]]) than is found in typical limy [[sediment]]s elsewhere. It occurs as a superficial [[calcareous]] crust no more than a few millimetres thick, which is generally white, grey, or brownish with a pearly [[Lustre (mineralogy)|lustre]]. It was believed to be formed in the [[intertidal zone]] by saltwater spray and [[evaporation]], but an [[alga]]l contribution has recently been suggested (Montanari and others (2007)), following an overlooked earlier proposal by E. Onorato in 1926. |
||
== |
==References== |
||
| ⚫ | |||
==External links== |
|||
[http://www.answers.com/topic/pelagosite Pelagosite] |
|||
*{{Cite web|url=http://www.answers.com/topic/pelagosite|title=Answers - the Most Trusted Place for Answering Life's Questions}} |
|||
[[Category:Calcium minerals]] |
|||
| ⚫ | |||
[[Category:Carbonate minerals]] |
|||
[[Category:Limestone]] |
|||
{{carbonate-mineral-stub}} |
|||
Latest revision as of 03:47, 2 October 2023
| Pelagosite | |
|---|---|
| General | |
| Category | Mineral |
| Formula (repeating unit) | CaCO3 |
| Identification | |
| Color | White, grey, brown |
| Luster | Pearly |
Pelagosite is a form of pisolitic aragonite (CaCO3) whose type locality is the Croatian island group of Palagruža (Italian Pelagosa, whence the name) in the middle of the Adriatic. It was identified by R. Moser in Mineralogische und petrographische Mitteilungen, new series (Vienna) 1 (1878), 174. It has a higher content of magnesium carbonate, strontium carbonate, calcium sulfate (gypsum) and silicon dioxide(silica) than is found in typical limy sediments elsewhere. It occurs as a superficial calcareous crust no more than a few millimetres thick, which is generally white, grey, or brownish with a pearly lustre. It was believed to be formed in the intertidal zone by saltwater spray and evaporation, but an algal contribution has recently been suggested (Montanari and others (2007)), following an overlooked earlier proposal by E. Onorato in 1926.