摘要
易县麦饭石系黑云母石英二长岩,属新开发的一种食品原料矿产资源。麦饭石主矿物长石的解理、裂隙、空洞中赋存有沸石及其它粘土矿物,构成一种独特的次生显微海绵状结构。按其次生矿物种类、集合体形态和大小、产出方式和部位,划分出叶片状、脉状、斑点状、环带状和囊状等五种类型。次生显微海绵状结构是麦饭石所特有的、区别于一般中酸性火成岩的主要特征,是决定麦饭石的物理化学性质和其健身益寿功效的主要因素,并可作为麦饭石重要的地质判別标志之一。
The Yixian maifanlite (YMS), a biotite-quartz monzouite, is a newly found mineral resource for food industry. It possesses the following characteristics: (1) existence of varied trace elements which are beneficial to human health; (2) fairly good functions of leaching, ion absorption and exchange, adjusting of pH and hardness of water and bacteria-inhibition; (3) Unique role in medical treatment and health care. It has thus been widely used in such aspects as medicine and health care, food and beverage, and environment protection.
For the first time the author has noticed that a large quantity of zeolite occurs in cleavages, openings and cavities of feldspar, a dominant mineral of the rock. In addition, the author has also named the densely-distributed secondary cavities of the feldspar filled with specific porous zeolite and clay minerals as secondary microspongy texture, which, on the basis of its secondary mineral composition, shapes and sizes of mineral aggregates and its modes of occurrence, can be further divided into bladed, veinlike, spotted, ringlike and pockety types. The author holds that the secondary microspongy texture isa distinctive character of maifanlite, by which maifanlite is distinguished from common intermediateacidity igneous rocks. This texture might be a major factor responsible for the beneficial physicochemical effects of maifanlite as well as its medicohealth care function. It can also be taken as an important geological diseriminant criterion of maifanlite.
出处
《岩石矿物学杂志》
CAS
CSCD
1990年第4期357-364,T001,共9页
Acta Petrologica et Mineralogica
关键词
麦饭石
沸石
次生
海绵状
结构
Yixian maifanlite
zeolite
secondary microspongy texture
