Saudi Arabia (i/ / or i/ /), officially known as the Kingdom of Saudi Arabia, is the largest Arab state in Western Asia by land area (approximately 2,150,000 km2 (830,000 sq mi), constituting the bulk of the Arabian Peninsula) and the second-largest in the Arab world (after Algeria). It is bordered by Jordan and Iraq to the north, Kuwait to the northeast, Qatar, Bahrain and the United Arab Emirates to the east, Oman to the southeast, Yemen in the south, the Red Sea to the west and Persian Gulf to the east. Its population is estimated to consist of 16 million citizens and an additional 9 million registered foreign expatriates and 2 million illegal immigrants.
The Kingdom of Saudi Arabia was founded by Abdul-Aziz bin Saud (known for most of his career as Ibn Saud) in 1932, although the conquests which eventually led to the creation of the Kingdom began in 1902 when he captured Riyadh, the ancestral home of his family, the House of Saud, referred to in Arabic as Al Saud. The regime has been an absolute monarchy since its inception. It describes itself as being Islamic and is highly influenced by Wahhabism. Saudi Arabia is sometimes called "the Land of the Two Holy Mosques" in reference to Al-Masjid al-Haram (in Mecca), and Al-Masjid an-Nabawi (in Medina), the two holiest places in Islam.
The sulfate minerals are a class of minerals which include the sulfate ion (SO42-) within their structure. The sulfate minerals occur commonly in primary evaporite depositional environments, as gangue minerals in hydrothermal veins and as secondary minerals in the oxidizing zone of sulfide mineral deposits. The chromate and manganate minerals have a similar structure and are often included with the sulfates in mineral classification systems.
Sulfate minerals include:
Rose rocks are aggregates of baryte (barium sulfate) crystals and sand whose iron content gives them a reddish hue. The baryte crystals form a circular array of flat plates, giving the rock a shape similar to a rose blossom. Rose rocks appear either as a single rose-like bloom or as clusters of blooms, with most sizes ranging from pea sized to 4 inches (10 cm) in diameter. The rose rock was selected as the official rock of the US state of Oklahoma in 1968.
Rose rocks are found in Algeria, Canada (in Nunavut), Jordan (in Wadi Rum), Morocco and the US (in and near central Oklahoma, the Wichita, the Ouachita Mountains and the Noble, Oklahoma area of Cleveland County, Oklahoma)./