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Anoth3r 50 Project

The gypsum in your egg carton will be a variety of gypsum. There are 3 varieties -- Selenite, Satin Spar, & Alabaster. The cover phot for this album is alabaster, as that is the variety most often found in quantities large enough to be called a Rock -- in this case, Rock Gypsum or Gyprock.

CHEMICAL FORMULA - CaSO4 · 2H2O (Hydrous Calcium Sulfate)

CRYSTAL SYSTEM - Monoclinic (3 axes of unequal length, one not at 90 degrees from the others)

HABIT - Clear crystals (selenite), satin spar (fibrous), alabaster (fine-grained/compact massive_

HARDNESS - 2

LUSTER- Vitreous, sub-vitreous, silky, pearly, dull

STREAK - White

COLOR - Clear, white, gray (others possible with impurities)

DENSITY - 2.31-2.32

CLEAVAGE - 3 directions (1 perfect, 2 distinct)

FRACTURE - conchoidal/subonchoidal

OCCURRENCE – Gypsum is an evaporite. It forms in evaporating freshwater and marine basins. It is often associated with other evaporites: glauberite, anhydrite, halite)

Just some of the USES are:

* Sheetrock (Gypboard, Drywall) In fact, because of the water in gypsum, it will act to slow down the progress of fire.

* Additive in Portland Cement to control drying time

* Fertilizer

* Soil conditioner There are various functions, but in the Arizona desert it is used to break up caliche. Gypsum crystals form quickly in wet soil, and that acts to break up the crusty caliche.

* Sculpture (alabaster)

* Plaster of Paris

* Medical: dental molds, plaster casts

* Food Industry: beer brewing, dough conditioner.....

We cannot include every detail about the mineral, so here is a Wikipedia link to get you started on exploration for Gypsum: en.wikipedia.org/wiki/Gypsum

When I was 39, I posed for my debut album, "Au Naturel".

Michele Morbidelli. © All rights reserved. Use without permission is illegal. Website | Facebook | Formspring | Tumblr. THANKS

iscanic-x/39.jpg

Cheryl's office

Jack being cute while sleeping in his new bed. It has bolsters on 2 sides and he loves it.

08-Feb-13

Canon T2i

Nikkor 50mm f/1.8

Necklace strait from Kenya!

39/365. 晚餐吃了薯條和米漢堡, 熱量很高, 但這樣的寒冬就縱容自己一次吧.

Personenzuglokomotive

1924Maschinenbau-Gesellschaft Karlsruhe, Fabr. Nr. 2308

an Deutsche Reichsbahn als 39 230

1949 an DB

1966 Kranprüfgewicht AW Offenburg

1984 Verkehrsmuseum Nürnberg

1996 DDM Neuenmarkt-Wirsberg

Fot. Sebastian Nycz / Knights of Columbus

i attempted to take pictures of the sky tonight because the stars were actually shining quite brightly .. but those failed. so here's a quick one i took of moose on my way inside

Manganiello Gifs

Tornado, MFG-2, German Navy.

RAF Mildenhall Air Fete '88

The Texas Stars played the Milwaukee Admirals in an American Hockey League game on December 1, 2019, at the HEB Center in Cedar Park, Texas. Milwaukee defeated 2-1 in overtime. (Andy Nietupski / Texas Stars)

Excursion to Vic. Cava plates cork. Exposition and exchange.

berlin afterglow

8 February 2010. The Kids got some new paint blocks. I thought that I had better take a photo before they destroyed them. The last lot lasted for 2 painting sessions. It is out of focus on purpose and I like it!

An apple a day....

The View is in San Francisco in pier 39 near to the Golden Gate bridge.

Forest Park Springfield MA

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