Code: ML267 名稱 氟鋁石膏Name Creedite化學公式 Ca3Al2SO4(F,OH)10•2H2OChemical Formula Ca3Al2SO4(F,OH)10•2H2O莫氏硬度 3.5 – 4Mohs scale of Hardness 3.5 – 4描述 顏色為無色，白色，紫色，橙色。鈣鐵礦形成無色至白色至紫色的單斜棱柱狀晶體。 光澤為玻璃態。條紋是白色的。透明性是透明至半透明的。  Description The colour is colourless, white, violet, orange. Creedite forms colorless to white to purple monoclinic prismatic crystals.  Luster is vitreous. The streak is white. Diaphaneity is transparent to translucent.小挑戰 在哪裡可以找到岩石？ 馬車車輪間隙，信條四邊形，科羅拉多州，美國。  Challenge Where can the find the rock? Wagon Wheel Gap, Creed Quadrangle, Colorado, USA. Reference https://en.wikipedia.org/wiki/Creedite https://www.mindat.org/min-1151.html by Chan Yan Hei on 18 April 2021

Read More »

ML266 名稱   榍石Name   Sphene化學公式   (Zn,Cu)5(CO3)2(OH)6Chemical Formula   (Zn,Cu)5(CO3)2(OH)6莫氏硬度   5-5.5Mohs scale of Hardness   5-5.5描述   榍石是一種非常罕見的明亮的黃綠色，綠色，橙色或棕色寶石，具有很高的光澤，由於其鈦含量而被稱為“鈦鐵礦”。Description   Sphene is a very rare brilliant yellowish-green, green, orange or brown gemstone with a high luster, also known as “titanite” due to its titanium content. 小挑戰   歷史 榍石自1787年以來就廣為人知，並根據其鈦含量在1795年由Martin Klaproth命名。 1801年，法國礦物學家Rene Just Hauy將其命名為“ sphene”。 1982年，國際礦物學協會新礦物和礦物名稱委員會（CNMMN）決定使用“鈦鐵礦”而不是“ sphene”這個名稱。 但是，“ sphene”和“ titanite”在礦物學界仍然被認可，並且sphene是最常用的寶石學術語。Challenge   History Sphene has been known since 1787 and was named according to its titanium content in 1795 by Martin Klaproth. In 1801, it was given the…

Read More »

Code: ML265 名稱   拉長石Name   Labradorite化學公式   (Ca,Na)AlSi3O8Chemical Formula   (Ca,Na)AlSi3O8莫氏硬度   6 – 6.5Mohs scale of Hardness   6 – 6.5描述   拉長石以多種顏色出現，例如灰色、灰白色、棕色、綠色、淺綠色、藍色、黃色和無色。它有白色條紋。拉長石的光澤為玻璃質至珍珠色。它具有稱為虹彩的特殊特徵。Description   Labradorite appears in plenty of colors, like gray, gray-white, brown, greenish, pale green, blue, yellow and colorless. It has a white streak. The luster of Labradorite is vitreous to pearly. It has a special characteristic called Iridescence.小挑戰   什麼是虹彩？ 這是某些表面隨著視角或照明角度的變化而逐漸改變顏色的現象。Challenge   What is Iridescence? It is the phenomenon of certain surfaces that appear to gradually change color as the…

Read More »

名稱   金雲母Name   Phlogopite化學公式   KMg3AlSi3O10(F,OH)2Chemical Formula   KMg3AlSi3O10(F,OH)2莫氏硬度   2-2.5Mohs scale of Hardness   2-2.5描述   通常，金雲母表現出不同的棕色陰影，具有玻璃或珍珠光澤。有時它的顏色也可能是紅棕色    Description   Usually, phlogopite exhibits different shades of brown, with vitreous or pearly shine. It may sometimes be in color reddish brown, as well.  小挑戰   我們在哪裡可以找到這石頭？   市場上也有晶形良好的晶體。這種情況的明顯發生可能包括加拿大，俄羅斯以及歐洲大陸的許多其他地方  Challenge   Where can we usually find this stone ? Well-formed crystals are also available in the market. The notable occurrences of this may include Canada, Russia, as well as in lot more localities in the…

Read More »

Read More »

Code: ML262 名稱 水晶Name Quartz化學公式 SiO2Chemical Formula SiO2莫氏硬度 7 –不純品種的含量較低Mohs scale of Hardness 7 – lower in impure varieties描述 顏色-通過各種顏色變為黑色無色 光澤-玻璃蠟狀，沉重時變鈍 條紋-白色Description Color – Colorless through various colors to black Luster – Vitreous-waxy to dull when massive Streak – White小挑戰 石英的名字從哪裡來？德語Challenge Where does quartz’s name come from? German ‘Quarz’ Reference 1. https://en.wikipedia.org/wiki/Quartz  By 4B21 Ma Ka Yu (21) on 19/4

Read More »

名稱   黃鐵礦Name   Pyrite 化學公式   FeS2Chemical Formula   FeS2莫氏硬度   6 – 6.5Mohs scale of Hardness   6 – 6.5描述   黃鐵礦是黃銅黃色的礦物，具有明亮的金屬光澤。 它之所以命名為黃鐵礦，是因為黃鐵礦被金屬或其他堅硬的材料擊中時，可用於產生著火所需的火花。 黃鐵礦碎片也已用作fl發槍械的產生火花的材料。Description   Pyrite is a brass-yellow mineral with a bright metallic luster. This name was given because pyrite can be used to create the sparks needed for starting a fire if it is struck against metal or another hard material. Pieces of pyrite have also been used as a spark-producing material in flintlock firearms.小挑戰   我們在哪裡可以找到這石頭？ 在礦脈中尋找黃鐵礦，流體在岩礦中移動。 礦脈通常包含最有價值的黃鐵礦晶體。 在諸如頁岩之類的沉積岩中找到黃鐵礦。 在安大略省的山坡上發現大量與瀝青相關的硫鐵礦硫化物（硫化物）。Challenge  …

Read More »

Read More »

名稱 輝銻礦  Name Stibnite  化學工式  Sb2S3Chemical name  Sb2S3莫氏硬度 2-2.5Mohs scale of hardness 2-2.5描述 輝銻礦為組成銻礦石的重要有用礦物，晶體呈柱狀、針狀。顏色和條痕均為鉛灰色。金屬光澤。Description This soft grey material crystallizes in an orthorhombic space group.  小挑戰   輝銻礦是否有毒？   輝銻礦 能在岩漿脈中發現。 輝銻礦是汞和碲高溫下溶合的產物。 因碲本身具有毒性，所以在受到加熱後會釋放出有毒的粉塵。  Challenge   Is stibnite toxic?   stibnite contains antimony, which if ingested can cause symptoms similar to those from arsenic poisoning

Read More »

Code: ML258 名稱 藍銅礦  Name Azurite  化學公式 Cu3(CO3)2(OH)2          Chemical Formula Cu3(CO3)2(OH)2          莫氏硬度  3.77-3.89  Mohs scale of Hardness  3.77-3.89  描述 它以深藍色到紫羅蘭色為特徵而聞名。藍色被稱為“天藍色”，就像沙漠和冬季景觀上方經常見到的深藍色夜空。    Description It is best known for its characteristic deep blue to violet-blue color. The blue color, known as “azure,” is like the deep blue evening skies often seen above deserts and winter landscapes.    小挑戰 藍銅礦有什麼用？   藍銅有時被用作珠子和珠寶，也被用作裝飾性石材。但是，其柔軟性和隨著時間的流逝失去深藍色的趨勢限制了這種用途。加熱很容易破壞藍晶石，因此所有藍晶石樣品的安裝必須在室溫下進行。Challenge What does azurite use for?   Azurite is used occasionally as beads and as jewelry, and also as an ornamental stone. However, its softness and tendency…

Read More »